question: Which of the coordinates is equal to $\cos (\pi)$ ?
  Choices:
  A:$x$-coordinate of point $A$
  B:$y$-coordinate of point $A$
  C:$x$-coordinate of point $B$
  D:$y$-coordinate of point $B$
  E:$x$-coordinate of point $C$
  F:$y$-coordinate of point $C$
query_wo: Please directly answer the question and provide the correct option letter, e.g., A, B, C, D.
  Question: Which of the coordinates is equal to $\cos (\pi)$ ?
  Choices:
  A:$x$-coordinate of point $A$
  B:$y$-coordinate of point $A$
  C:$x$-coordinate of point $B$
  D:$y$-coordinate of point $B$
  E:$x$-coordinate of point $C$
  F:$y$-coordinate of point $C$
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: Which of the coordinates is equal to $\cos (\pi)$ ?
  Choices:
  A:$x$-coordinate of point $A$
  B:$y$-coordinate of point $A$
  C:$x$-coordinate of point $B$
  D:$y$-coordinate of point $B$
  E:$x$-coordinate of point $C$
  F:$y$-coordinate of point $C$
question_for_eval: Which of the coordinates is equal to $\cos (\pi)$ ?
  Choices:
  A:$x$-coordinate of point $A$
  B:$y$-coordinate of point $A$
  C:$x$-coordinate of point $B$
  D:$y$-coordinate of point $B$
  E:$x$-coordinate of point $C$
  F:$y$-coordinate of point $C$