在考试类标题问题中使用 \points 和 \totalpoints

Question

我正在尝试创建一个标题问题，其中总分会自动计算。我尝试了以下方法，但都无法实现我的目标：

\documentclass[addpoints]{exam}
\begin{document}
\begin{questions}

% Option 1: This works but does not do the points => point switch for 1 point
%\titledquestion{ (\totalpoints{} points) {\bf A question}}

% Option 2: It seems like this should work (?) but it gives an error...
%\titledquestion{ (\totalpoints{} \points) {\bf A question}}

% Option 3: This works, but I have to manually add the points of the 
% parts which I want to avoid...
%\titledquestion{{\bf A question}}[1]

% Option 4: This does not work...I get an error.
%\titledquestion{{\bf A question}}[\totalpoints{}]

\thequestiontitle
\begin{parts}
  \part[1]
  First part.
  \part[0]
  Second part. 
\end{parts}
\end{questions}
\end{document}

对于上面的选项 2，我收到错误：

! Undefined control sequence.
\points ...up \let \half =\relax \edef \pt@string 
                                                  {\@points }\ifthenelse {\e...

而对于选项 4，我得到：

! LaTeX Error: Something's wrong--perhaps a missing \item.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.17 ...question{{\bf A question}}[\totalpoints{}]

最糟糕的情况是，我可以忍受糟糕的语法，但想避免计算出的要点摘要不正确......

非常感谢任何帮助/建议。

（请注意，\totalpoints{} \points该命令确实有效\qformat，但似乎不适用于标题问题？）