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: Butterflies will often times have coloring that at look like eyes on their wings for (A) to look pretty (B) fun (C) to see flowers (D) protection
Example Output: D

Example Input: What contains nutrients for plants? (A) dirt cheap (B) wind (C) ground minerals (D) soiled clothes
Example Output: C

Example Input: Which of these are required in addition to a toaster to make toast? (A) carpet (B) power plant (C) television (D) satellite
Example Output:
B