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: A person who wants to visit a desert will be sure to pack more (A) winter boots (B) thermal underwear (C) tan shorts (D) snowsuits
Example Output: C

Example Input: Which would likely decrease the food in an environment? (A) gravity (B) water evaporation (C) a tree (D) time
Example Output: B

Example Input: What contains moons? (A) ships (B) space mass (C) people (D) plants
Example Output:
B