question: Two triangles A E B and A D C are similar with a shared vertex A. E B \parallel D C.  A B = x - 2 and B C = 5. Find x.
  Choices:
  A:5
  B:7.5
  C:9.5
  D:10
query_wo: Please directly answer the question and provide the correct option letter, e.g., A, B, C, D.
  Question: Two triangles A E B and A D C are similar with a shared vertex A. E B \parallel D C.  A B = x - 2 and B C = 5. Find x.
  Choices:
  A:5
  B:7.5
  C:9.5
  D:10
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: Two triangles A E B and A D C are similar with a shared vertex A. E B \parallel D C.  A B = x - 2 and B C = 5. Find x.
  Choices:
  A:5
  B:7.5
  C:9.5
  D:10
question_for_eval: Two triangles A E B and A D C are similar with a shared vertex A. E B \parallel D C.  A B = x - 2 and B C = 5. Find x.
  Choices:
  A:5
  B:7.5
  C:9.5
  D:10