mcq with more than one correct choice

[kesu33]

% https://tex.stackexchange.com/q/549540/
\documentclass[12pt]{article}
\usepackage[T1]{fontenc}

\usepackage{parskip}
\usepackage{geometry}
\geometry{ a4paper, left=5mm, right=5mm, top=15mm }

\usepackage{amsmath,amssymb}

\usepackage{multicol}
\setlength{\columnsep}{1mm}
\setlength{\columnseprule}{0.2pt}

\usepackage[most]{tcolorbox}

\usepackage{siunitx}
\usepackage{xsim}
\usepackage{tasks}

\makeatletter
\newtcolorbox{examtitle}[2][]{
halign=flush center,
colframe=gray!70!black,
fonttitle=\Large,
enhanced,
breakable,
colback=white,
attach boxed title to top right={yshift=-2pt}, title={#2},
boxed title size=standard,
boxrule=0pt,
boxed title style={
sharp corners,
rounded corners=northeast,
colback=tcbcolframe,
boxrule=0pt},
sharp corners=north,
overlay unbroken={
\path[fill=tcbcolback]
([xshift=2pt]title.south west)
to[out=180, in=0] ([xshift=-1.5cm]title.west)--
(title.west-|frame.west) |-
([xshift=2pt]title.south west)--cycle;
\path[fill=tcbcolframe] (title.south west)
to[out=180, in=0] ([xshift=-1.5cm]title.west)--
(title.west-|frame.west)
[rounded corners=\kvtcb@arc] |-
(title.north-|frame.north)
[sharp corners] -| (title.south west);
\draw[line width=.5mm, rounded corners=\kvtcb@arc,
tcbcolframe]
(title.north east) rectangle
(frame.south west);
},
overlay first={
\path[fill=tcbcolback]
([xshift=2pt]title.south west)
to[out=180, in=0] ([xshift=-1.5cm]title.west)--
(title.west-|frame.west) |-
([xshift=2pt]title.south west)--cycle;
\path[fill=tcbcolframe] (title.south west)
to[out=180, in=0] ([xshift=-1.5cm]title.west)--
(title.west-|frame.west)
[rounded corners=\kvtcb@arc] |-
(title.north-|frame.north)
[sharp corners] -| (title.south west);
\draw[line width=.5mm, rounded corners=\kvtcb@arc,
tcbcolframe]
(frame.south west) |- (title.north) -|
(frame.south east);
},
overlay middle={
\draw[line width=.5mm, tcbcolframe]
(frame.north west)--(frame.south west)
(frame.north east)--(frame.south east);
},
overlay last={
\draw[line width=.5mm, rounded corners=\kvtcb@arc,
tcbcolframe]
(frame.north west) |- (frame.south) -|
(frame.north east);
},
#1
}
\makeatother

\xsimsetup{
load-style = layouts ,
exercise/template = minimal ,
exercise/the-counter = \arabic{exercise}. ,
exercise/end-hook = \vspace{\baselineskip}
}

\NewTasksEnvironment[
label = (\Alph*) ,
label-format = \bfseries ,
label-width = 21pt
]{choices}[\choice]
%\DeclareExerciseType{mcq}
\DeclareExerciseProperty{answer}
\DeclareExerciseProperty{ans}
%\newcommand*\answer[1]{%
% \SetExpandedExerciseProperty{answer}{ \thetask\ \unexpanded{#1}}%
% #1%
%}

% Define the \answer command
\NewDocumentCommand \answer {o m }
{\IfNoValueTF{#1}{%
\SetExerciseProperty{answer}{#2}%,
}{%
\SetExpandedExerciseProperty{answer}{\GetExerciseProperty{answer},#2} %
}%
#2%
}
%\edef\newvalue{\GetExerciseProperty{answer}, #2}

\newcommand*\getanswers{%
\def\betweenanswers{\def\betweenanswers{\hspace{2em}}}%
\ForEachUsedExerciseByID{%
\betweenanswers##3\ExercisePropertyGet{##1}{##2}{answer}%
}%
}

\begin{document}

\begin{examtitle}{Test 1}
	Angles in parallel lines
\end{examtitle}

\begin{multicols*}{2}
	\begin{exercise}
		If the ratio of two supplementary angles is $\frac{4}{11}$, what is the
		measure of the small angle?
		\begin{choices}(5)
			\choice \ang{36}
			\choice \ang{44}
			\choice \answer[kesu]{\ang{48}}
			\choice \answer[kk]{\ang{52}}
			\choice \ang{60}
		\end{choices}
	\end{exercise}
	\begin{exercise}
		Is this really a question?
		\begin{choices}(4)
			\choice \answer{yes}
			\choice no
			\choice maybe
			\choice no idea
		\end{choices}
	\end{exercise}
	\begin{exercise}
		This really is a question!
		\begin{choices}(4)
			\choice yes
			\choice \answer[1]{no} 
			\choice \answer[2]{maybe} 
			\choice no idea
		\end{choices}			
	\end{exercise}
	

	\subsection*{Answers}
	\getanswers
\end{multicols*}

\end{document}
document.pdf

answer shows two option but in many times