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: If something is in an ecosystem, it could be (A) invisible (B) vacuum of space (C) lacking life (D) alien
Example Output: C

Example Input: What is an instance of carnivores only eating animals? (A) a mouse eating a cricket (B) a dog devouring a piece of cheese (C) tyrannosaurus rex devouring a pterodactyl (D) a cat eating grass outdoors
Example Output: C

Example Input: If your hand is being burned on a stove (A) you will feel cool (B) you will be chilled (C) your nervousness will disappear (D) your nerves will make you aware
Example Output:
D