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 mantle is (A) a level of our planet (B) the planet closest to ours (C) a kind of rock found on Earth (D) the deepest part of our planet

Output: A


Input: Consider Input: Which would create the most pollution (A) animals (B) rivers (C) smoke stacks (D) toxicity

Output: C


Input: Consider Input: If a day goes by and night falls surprisingly quickly (A) it is likely freezing (B) summer is just beginning (C) the beaches are opening (D) summer solstice is being celebrated


Output: A