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: The moon reflects rays of sun from our (A) red giant (B) jupiter (C) yellow dwarf (D) whit dwarf
Example Output: C

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

Example Input: A pet with flippers is sometimes kept in a (A) folding metal crate with door (B) cushioned pad with round opening (C) bean-shaped container with fake tree (D) cage with wheel and tubes
Example Output:
C