question: As shown in the figure, arc AD = arc CD. Then angle DAC is equal to ()
  Choices:
  A:70°
  B:45°
  C:30°
  D:25°
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, arc AD = arc CD. Then angle DAC is equal to ()
  Choices:
  A:70°
  B:45°
  C:30°
  D:25°
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, arc AD = arc CD. Then angle DAC is equal to ()
  Choices:
  A:70°
  B:45°
  C:30°
  D:25°
question_for_eval: As shown in the figure, arc AD = arc CD. Then angle DAC is equal to ()
  Choices:
  A:70°
  B:45°
  C:30°
  D:25°