question: Consider the graph shown.
  
  Which of the following relationships could be represented by the given graph?
  Choices:
  A:The number of people $(y)$ attending a parent/teacher conference when there are $x$ parents, each bringing 2 children.
  B:The number of layers $(y)$ resulting from a rectangular piece of paper being folded in half $x$ times.
  C:The number of handshakes $(y)$ made by $x$ people in a room if every person shakes hands with every other person.
query_wo: Please directly answer the question and provide the correct option letter, e.g., A, B, C, D.
  Question: Consider the graph shown.
  
  Which of the following relationships could be represented by the given graph?
  Choices:
  A:The number of people $(y)$ attending a parent/teacher conference when there are $x$ parents, each bringing 2 children.
  B:The number of layers $(y)$ resulting from a rectangular piece of paper being folded in half $x$ times.
  C:The number of handshakes $(y)$ made by $x$ people in a room if every person shakes hands with every other person.
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: Consider the graph shown.
  
  Which of the following relationships could be represented by the given graph?
  Choices:
  A:The number of people $(y)$ attending a parent/teacher conference when there are $x$ parents, each bringing 2 children.
  B:The number of layers $(y)$ resulting from a rectangular piece of paper being folded in half $x$ times.
  C:The number of handshakes $(y)$ made by $x$ people in a room if every person shakes hands with every other person.
question_for_eval: Consider the graph shown.
  
  Which of the following relationships could be represented by the given graph?
  Choices:
  A:The number of people $(y)$ attending a parent/teacher conference when there are $x$ parents, each bringing 2 children.
  B:The number of layers $(y)$ resulting from a rectangular piece of paper being folded in half $x$ times.
  C:The number of handshakes $(y)$ made by $x$ people in a room if every person shakes hands with every other person.