question: Then the outer diameter of the round nut is ()
  Choices:
  A:12cm
  B:24cm
  C:6√{3}cm
  D:12√{3}cm
query_wo: Please directly answer the question and provide the correct option letter, e.g., A, B, C, D.
  Question: Then the outer diameter of the round nut is ()
  Choices:
  A:12cm
  B:24cm
  C:6√{3}cm
  D:12√{3}cm
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: Then the outer diameter of the round nut is ()
  Choices:
  A:12cm
  B:24cm
  C:6√{3}cm
  D:12√{3}cm
question_for_eval: Then the outer diameter of the round nut is ()
  Choices:
  A:12cm
  B:24cm
  C:6√{3}cm
  D:12√{3}cm