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: the alps were formed by rock what? (A) growing (B) melting (C) erupting (D) creasing

Output: D


Input: Consider Input: heat and pressure change the remains of what into natural gas? (A) leaves (B) cans (C) books (D) cars

Output: A


Input: Consider Input: A grouper will breathe beneath the surface of a pond because it has (A) tips (B) noses (C) neck slits (D) wings


Output: C