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: What did some ancient societies use to reflect light? (A) wood (B) plants (C) clothing (D) rocks
Example Output: D

Example Input: If you see a mushroom on an old decaying log, its because a mushroom is a decomposer, which gets its food from (A) non-alive things (B) space (C) computers (D) the store
Example Output: A

Example Input: A child will only grow if they are provided with (A) a bed (B) education (C) inspiration (D) energy
Example Output:
D