question: As shown in the figure, in triangle ABC, angle BAC = 90.0, AD perpendicular  BC at point D, AE bisects angle DAC, angle B = 50.0, so the degree of angle DAE is ()
  Choices:
  A:45°
  B:20°
  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, in triangle ABC, angle BAC = 90.0, AD perpendicular  BC at point D, AE bisects angle DAC, angle B = 50.0, so the degree of angle DAE is ()
  Choices:
  A:45°
  B:20°
  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, in triangle ABC, angle BAC = 90.0, AD perpendicular  BC at point D, AE bisects angle DAC, angle B = 50.0, so the degree of angle DAE is ()
  Choices:
  A:45°
  B:20°
  C:30°
  D:25°
question_for_eval: As shown in the figure, in triangle ABC, angle BAC = 90.0, AD perpendicular  BC at point D, AE bisects angle DAC, angle B = 50.0, so the degree of angle DAE is ()
  Choices:
  A:45°
  B:20°
  C:30°
  D:25°