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 shoe seems gold and green at first, then at second glance looks blue and silver. This could be due to (A) interrogation (B) comas (C) refractions (D) cellulite
Example Output: C

Example Input: A big cat looks for prey (A) at 3pm (B) at 11pm (C) at 9am (D) at noon
Example Output: B

Example Input: Mountains exist on a planet next to (A) Saturn (B) Mars (C) Neptune (D) Uranus
Example Output:
B