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: To protect themselves from consumers, which action would an animal most likely take? (A) nesting right beside predators (B) standing out in the sun (C) standing out from the environment (D) appearing the same as surroundings
Example Output: D

Example Input: What did some ancient societies use to reflect light? (A) wood (B) plants (C) clothing (D) rocks
Example Output: D

Example Input: High areas can be visually represented by (A) basins (B) deep sea (C) valleys (D) mountains
Example Output:
D