question: The graph, which is a linear function and passes the origin, shows Charlie's speed while he is competing in a bike race, the x-axis representing Time and the y-axis representing Speed. Which situation corresponds to the graph?
  Choices:
  A:Charlie starts off by increasing his pace gradually and then stops as he trips over a stick,but then recovers and is able to increase his speed steadily until the end of the race
  B:Charlie starts off at a constant speed and then increases his speed at a steady rate
  C:Charlie hits his maximum speed about halfway through the race
  D:Charlie increases his speed at a constant rate throughout
query_wo: Please directly answer the question and provide the correct option letter, e.g., A, B, C, D.
  Question: The graph, which is a linear function and passes the origin, shows Charlie's speed while he is competing in a bike race, the x-axis representing Time and the y-axis representing Speed. Which situation corresponds to the graph?
  Choices:
  A:Charlie starts off by increasing his pace gradually and then stops as he trips over a stick,but then recovers and is able to increase his speed steadily until the end of the race
  B:Charlie starts off at a constant speed and then increases his speed at a steady rate
  C:Charlie hits his maximum speed about halfway through the race
  D:Charlie increases his speed at a constant rate throughout
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: The graph, which is a linear function and passes the origin, shows Charlie's speed while he is competing in a bike race, the x-axis representing Time and the y-axis representing Speed. Which situation corresponds to the graph?
  Choices:
  A:Charlie starts off by increasing his pace gradually and then stops as he trips over a stick,but then recovers and is able to increase his speed steadily until the end of the race
  B:Charlie starts off at a constant speed and then increases his speed at a steady rate
  C:Charlie hits his maximum speed about halfway through the race
  D:Charlie increases his speed at a constant rate throughout
question_for_eval: The graph, which is a linear function and passes the origin, shows Charlie's speed while he is competing in a bike race, the x-axis representing Time and the y-axis representing Speed. Which situation corresponds to the graph?
  Choices:
  A:Charlie starts off by increasing his pace gradually and then stops as he trips over a stick,but then recovers and is able to increase his speed steadily until the end of the race
  B:Charlie starts off at a constant speed and then increases his speed at a steady rate
  C:Charlie hits his maximum speed about halfway through the race
  D:Charlie increases his speed at a constant rate throughout