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: 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 a thing is using other animals for nourishment, then the thing is a (A) predator (B) producer (C) inanimate (D) herbivore
Example Output: A

Example Input: A herd of wild horses has been decreasing in size rapidly. Which of these might be the cause? (A) There has been a lot of rain (B) The month of July has arrived (C) Predators have moved out of the area (D) All of the vegetation has been dying
Example Output:
D