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: You can eventually obtain water from a lake even if it's (A) frozen (B) gone (C) evaporated (D) dry
Example Output: A

Example Input: if two students with identical genes grow at a different pace, what could be responsible? (A) they might have different houses (B) they might have different hair types (C) they might have different clothes (D) they might have different diets
Example Output:
D