question: There is a triangle with two angles 30 and 60 degrees. Find y.
  Choices:
  A:21
  B:21 \sqrt { 2 }
  C:21 \sqrt { 3 }
  D:42
query_wo: Please directly answer the question and provide the correct option letter, e.g., A, B, C, D.
  Question: There is a triangle with two angles 30 and 60 degrees. Find y.
  Choices:
  A:21
  B:21 \sqrt { 2 }
  C:21 \sqrt { 3 }
  D:42
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: There is a triangle with two angles 30 and 60 degrees. Find y.
  Choices:
  A:21
  B:21 \sqrt { 2 }
  C:21 \sqrt { 3 }
  D:42
question_for_eval: There is a triangle with two angles 30 and 60 degrees. Find y.
  Choices:
  A:21
  B:21 \sqrt { 2 }
  C:21 \sqrt { 3 }
  D:42