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").

Example Input: In order to conserve energy and eat less through winter, what kind of animal or insect hibernates? (A) Chairs (B) Birds (C) Humans (D) Bees
Example Output: D

Example Input: A star produces light energy and heat because it has a variety of (A) moon rotation causing friction (B) light energy flowing to earth (C) reactions of nuclear form (D) global warming caused by co2
Example Output: C

Example Input: Despite what some think, instead  around themselves, our planet spins around (A) pluto (B) the moon (C) the milky way (D) the sun
Example Output:
D