Xrhrft

I am typesetting a competition examination paper, and I wanted to satisfy a very specific requirement for the multiple-choice questions: five choices, each with capital letter choice labels all in equal-sized circles with the labels smack in the centres of the circles, and all aligned to the question text hanging indent. It took me a while, but I have thus far combined the (excellent, detailed and clean) solutions in the following threads:

1. Good way to make textcircled numbers?


2. Using circled numbers for answer choices in exam document class


3. How can I draw circled integers with the same size by TikZ?


4. Set indentation of choice in exam documentclass

And thus I have the following MWE:

documentclass[preview, class=exam,varwidth=true]{standalone}



usepackage[T1]{fontenc}

usepackage{lmodern}

usepackage{tikz}



newcommand*circled[1]{tikz[baseline=(char.base)]{%

    node[shape=circle, draw, minimum size=1.5em, inner sep=0pt, label={center:#1}, thick] (char) {#1};}}

renewcommandchoicelabel{%

    circled{thechoice}}

renewcommand{questionshook}{%

    settowidth{leftmargin}{0pt}}

renewcommand{choiceshook}{%

    settowidth{leftmargin}{W.hskiplabelsephskip 0em}}



begin{document}



begin{questions}



begin{EnvUplevel}

Welcome to the competition.

end{EnvUplevel}



question This is an example of a question. 

begin{choices}

    choice This is Choice A.

    choice This is Choice B.

    choice This is Choice C.

    choice This is Choice D. 

    choice This is Choice E. 

end{choices}

end{questions}

end{document}

The thing is, the circles now appear to exceed the hanging indent of the question text and are a bit too far to the left, as shown by the black line I've added in mspaint. I would like the left edges of the circles to coincide precisely with the hanging indent of the question text; how may I go about doing this?

Here is a proposal. I only changed

 renewcommand{choiceshook}{settowidth{leftmargin}{circled{W}.hskiplabelsephskip 0em}}

to change the indent. Big thanks to Torbjørn T. for pointing out that I misread a requirement before.

documentclass[preview, class=exam,varwidth=true]{standalone}



usepackage[T1]{fontenc}

usepackage{lmodern}

usepackage{tikz}



newcommand*circled[1]{tikz[baseline=(char.base)]{%

    node[shape=circle, draw, minimum size=1.5em, inner sep=0pt , thick] (char) {#1};}}

renewcommandchoicelabel{circled{Alph{choice}}}

renewcommand{questionshook}{%

    settowidth{leftmargin}{0pt}}

renewcommand{choiceshook}{settowidth{leftmargin}{circled{W}.hskiplabelsephskip 0em}}



begin{document}



begin{questions}



begin{EnvUplevel}

Welcome to the competition.

end{EnvUplevel}



question This is an example of a question. 

begin{choices}

    choice This is Choice A.

    choice This is Choice B.

    choice This is Choice C.

    choice This is Choice D. 

    choice This is Choice E. 

end{choices}

end{questions}

end{document}