question: As shown in the figure, then the radius of circle O is ()
  Choices:
  A:3
  B:2√{3}
  C:6
  D:4√{3}
query_wo: Please directly answer the question and provide the correct option letter, e.g., A, B, C, D.
  Question: As shown in the figure, then the radius of circle O is ()
  Choices:
  A:3
  B:2√{3}
  C:6
  D:4√{3}
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: As shown in the figure, then the radius of circle O is ()
  Choices:
  A:3
  B:2√{3}
  C:6
  D:4√{3}
question_for_eval: As shown in the figure, then the radius of circle O is ()
  Choices:
  A:3
  B:2√{3}
  C:6
  D:4√{3}