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 earth revolves around the sun in (A) a day (B) a year (C) a week (D) a month
Example Output: B

Example Input: An animal can use what to help find a partner (A) social networking and dating apps (B) beautiful vibrant tail plumage (C) asking animal friends for advice (D) meet ups and social gatherings
Example Output: B

Example Input: The amount of water in the ocean compared to fifty years ago is (A) fluctuating (B) larger (C) smaller (D) the same
Example Output:
B