In this task, you are given a multiple-choice question and you have to pick the correct option. Answer with option indexes (i.e., "A", "B", "C", and "D").

Example input: Deserts are in extremely dry environments, so liquids will naturally be (A) rainbow (B) plentiful (C) meager (D) talented
Example output: C
Example explanation: This is a good example and the output correctly answers the question.
Q: The middle of the day usually involves the bright star nearest to the earth to be straight overhead why? (A) moon rotation (B) human planet rotation (C) moons gravity (D) global warming
A:
B