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 human displays that they can: (A) squinting in bright light (B) digesting food in the stomach (C) change a car tire (D) inhaling and exhaling during sleep

Output: C


Input: Consider Input: What would be an example of migration? (A) Geese leaving Michigan for Florida when temperatures are dropping (B) Cattle going to the barn to sleep at night (C) Bats flying at night to catch mosquitoes (D) Bees flying to a patch of clover flowers

Output: A


Input: Consider Input: Tearing an object changes that object's (A) formation (B) biology (C) chemical composition (D) nutrition


Output: A