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: Factories often add something to the environment that is (A) helpful (B) productive (C) sanitizing (D) posionous

Output: D


Input: Consider Input: Scraping the side of a cliff may result in (A) ice (B) snow (C) sand (D) wood chips

Output: C


Input: Consider Input: If a wolf wants to grow big and strong, what must he have? (A) a car to drive (B) a house to live in (C) a bus to sell (D) good eyes to see with


Output: D