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: Heat exposure at higher temperatures without ability to regulate internal body temperatures will result in the expiration of which of these? (A) ace of spades (B) bored ghosts (C) large bridge (D) gila monster
Example Output: D

Example Input: Dead organisms are the source of what for decomposers? (A) nutriment (B) pride (C) oceans (D) people
Example Output: A

Example Input: In an experiment, chemical splashing can happen so (A) be dangerous (B) be safe (C) be messy (D) be playful
Example Output:
B