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: an example of converting potential energy to kinetic energy is (A) a resting bird (B) a still rock (C) our own sun (D) cars spinning tires

Output: D


Input: Consider Input: Animals may relocate to a new environment if their old environment (A) experienced a large hurricane (B) experienced a serious thunderstorm (C) had a few arid days (D) had little rainfall for a week

Output: A


Input: Consider Input: If a thing reacts in a situation, the most likely reason for the chemical reaction is (A) steam is removed gently (B) upper temps are applied slowly (C) deer are fed tenderly (D) bees are introduced carefully


Output: B