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: Why would a species camouflage as a dangerous animal? (A) to mate (B) to avoid crocodiles (C) to catch prey (D) to  build nests
Example Output: B

Example Input: adding a direct flame to container of acid causes a (A) dormant cycle (B) lot of nothing (C) lower temperature (D) vapor expulsion
Example Output: D

Example Input: What happens to a cat's fur in the summer? (A) The fur becomes darker (B) The fur becomes more dense (C) It becomes less dense (D) It stays the same density
Example Output:
C