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: A bear hibernates through cold weather because (A) bears get very tired (B) it is gestating young (C) resources are scarce in winter (D) winter is too cold
Example Output: C

Example Input: Which is likely to provide an undesired acquired characteristic for an organism? (A) a light scratch on its leg (B) learning to leave the nest (C) finding a potential mate (D) dipping a foot in magma
Example Output: D

Example Input: A thing that may assist a living being in prolonging life is (A) making bad decisions (B) quitting when tired (C) calibrating to changes (D) living in danger
Example Output:
C