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").

Input: Consider Input: A learned behavior is exhibited when (A) squinting in bright light (B) nailing up a picture frame (C) blinking and gulping air (D) inhaling and exhaling during sleep

Output: B


Input: Consider Input: The everglades where nearly wiped out by (A) the sun (B) builders (C) sea cows (D) alligators

Output: B


Input: Consider Input: Turning a piece of paper into a ball is an example of (A) folding (B) flattening (C) squashing (D) restoring


Output: C