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: The cell of a plant when photosynthesizing may most require (A) access to roofless space (B) a complete vacuum in space (C) a room with blackened windows (D) dark basement living quarters
Example Output: A

Example Input: What would light bounce off of when it hits it? (A) a wall painted grey (B) old worn out leather (C) a freshly waxed car (D) a street made of gravel
Example Output: C

Example Input: The desert rat has evolved traits that help it live with low supplies of water, what is this an example of? (A) acquired heuristics (B) acquired characteristics (C) acquired interests (D) acquired statistics
Example Output:
B