question: R, S, T are midpoints of A C, A B, and C B. M C = 7, R M = 4, and A T = 16. Find M B.
  Choices:
  A:6
  B:8
  C:10
  D:12
query_wo: Please directly answer the question and provide the correct option letter, e.g., A, B, C, D.
  Question: R, S, T are midpoints of A C, A B, and C B. M C = 7, R M = 4, and A T = 16. Find M B.
  Choices:
  A:6
  B:8
  C:10
  D:12
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: R, S, T are midpoints of A C, A B, and C B. M C = 7, R M = 4, and A T = 16. Find M B.
  Choices:
  A:6
  B:8
  C:10
  D:12
question_for_eval: R, S, T are midpoints of A C, A B, and C B. M C = 7, R M = 4, and A T = 16. Find M B.
  Choices:
  A:6
  B:8
  C:10
  D:12