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: A plane travels through what? (A) gas layers (B) plains (C) oceans (D) time

Output: A


Input: Consider Input: Solar energy is adsorbed by (A) planted flowers under the moonlight (B) potted flowers in a windowless room (C) planted flowers on a bright, clear day (D) seeds that have just been planted in the ground

Output: C


Input: Consider Input: Some animals change their appearance completely during a stage of the life cycle known as (A) metamorphosing (B) metal (C) Seven (D) drawing


Output: A