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: This can be used to light up a light bulb (A) grass (B) dirt (C) stones. (D) biofuel

Output: D


Input: Consider Input: An action that may provide a small bit of warmth could be (A) looking out of a window (B) putting the radio on (C) looking at a snow storm (D) smashing hands together repeatedly

Output: D


Input: Consider Input: The air was cold, so all night the sheep kept (A) sleeping (B) shaking (C) jumping (D) running.


Output: B