question: There is a curve goes through the origin. Use the vertical line test to determine if this relation is a function.
  Choices:
  A:This is a function
  B:This is not a function
query_wo: Please directly answer the question and provide the correct option letter, e.g., A, B, C, D.
  Question: There is a curve goes through the origin. Use the vertical line test to determine if this relation is a function.
  Choices:
  A:This is a function
  B:This is not a function
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 curve goes through the origin. Use the vertical line test to determine if this relation is a function.
  Choices:
  A:This is a function
  B:This is not a function
question_for_eval: There is a curve goes through the origin. Use the vertical line test to determine if this relation is a function.
  Choices:
  A:This is a function
  B:This is not a function