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

Example Input: wind is used for producing (A) cupcakes (B) smores (C) excited particle flowing (D) plants
Example Output: C

Example Input: High carbon steel contains (A) nickel (B) ammonia (C) Na (D) Fe
Example Output:
D