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: a lighter object hue can lead to what? (A) none of these (B) positive charge in electricity (C) a bad electric conduction (D) ability to see yourself in it better
Example Output: 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: Slate probably formed (A) on top of a glacier (B) somewhere in the Internet (C) on a mountain top (D) deep within the earth
Example Output:
D