question: Consider the graph, where it is an exponential function and passes through (0,1), (1,2), (2,4), and (3,8), 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, where it is an exponential function and passes through (0,1), (1,2), (2,4), and (3,8), 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, where it is an exponential function and passes through (0,1), (1,2), (2,4), and (3,8), 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, where it is an exponential function and passes through (0,1), (1,2), (2,4), and (3,8), 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.