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").

Input: Consider Input: The cell membrane keeps a cell from (A) replicating (B) getting lost (C) falling apart (D) running away

Output: C


Input: Consider Input: Which of the following has a population of zero? (A) Merriam's elk (B) bison (C) llama (D) whooping crane

Output: A


Input: Consider Input: If an icicle melts, or steam condenses, that matter would (A) sing (B) fry (C) rot (D) dribble


Output: D