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: In the desert it was harder to find a (A) stream (B) cactus (C) dry bed (D) canyon
Example Output: A

Example Input: Webbed feet aid in what (A) penguins laying eggs on ice (B) fish hiding in coral reefs (C) gulls dive bombing fish from the sea (D) ducks chasing prey underwater
Example Output: D

Example Input: Why do zebras choose to live where they live? (A) great location (B) lovely view (C) edible items (D) good parking
Example Output:
C