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: Viruses are killed by objects used in a (A) backyard (B) bathroom (C) kitchen (D) living room
Example Output: C

Example Input: Grooves in the ground are a sign of (A) sink holes (B) erosion (C) water accumulation (D) high traffic
Example Output: B

Example Input: Which describes the proper usage of bird beaks? (A) skinny beats are best for sucking blood, fat beaks eat only eggs (B) skinny beaks work in only large spaces, fat beaks can only fit in narrow spaces (C) skinny beaks work to reach small spaces, fat beaks crack nuts (D) skinny beaks work to filet fish, fat beaks are useless
Example Output:
C