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: Viruses are killed by objects used in a (A) backyard (B) bathroom (C) kitchen (D) living room
Example Output: C

Example Input: Pulse accelerates (A) when cooling down after a work out (B) when running pace increases (C) when running pace slows (D) when entering into a sleep state
Example Output: B

Example Input: Birds carrying away fruit has what kind of impact on the plant (A) positive (B) negative (C) very low (D) neutral
Example Output:
A