question: The distences between M and the two chords are equal. Find m \angle C A M.
  Choices:
  A:14
  B:28
  C:36
  D:90
query_wo: Please directly answer the question and provide the correct option letter, e.g., A, B, C, D.
  Question: The distences between M and the two chords are equal. Find m \angle C A M.
  Choices:
  A:14
  B:28
  C:36
  D:90
query_cot: Please first conduct reasoning, and then answer the question and provide the correct option letter, e.g., A, B, C, D, at the end.
  Question: The distences between M and the two chords are equal. Find m \angle C A M.
  Choices:
  A:14
  B:28
  C:36
  D:90
question_for_eval: The distences between M and the two chords are equal. Find m \angle C A M.
  Choices:
  A:14
  B:28
  C:36
  D:90