Detailed Instructions: 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").
See one example below:
Problem: Deserts are in extremely dry environments, so liquids will naturally be (A) rainbow (B) plentiful (C) meager (D) talented
Solution: C
Explanation: This is a good example and the output correctly answers the question.

Problem: Which of the following is true? (A) sunlight works best in caves (B) fear can fuel motorcycles (C) corn can fuel public transit (D) rice can never be used as fuel
Solution:
C