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: Adding something poisonous to an environment and harming it is called what? (A) dirtying (B) liking (C) cleaning (D) observing

Output: A


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: An inherited characteristic from my dad is (A) nasal structure (B) a building (C) the bike (D) the cat


Output: A