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 cultivation of a range of crop types in a specific order has a positive impact on (A) soil quality (B) water quality (C) air quality (D) atmospheric conditions

Output: A


Input: Consider Input: if the surface of our planet is different after a while, what could have happened? (A) the surface eroded on its own (B) all of these (C) there were natural occurrences (D) man has damaged the surface

Output: B


Input: Consider Input: An individual can conserve by (A) recycling and using gasoline (B) recycling and using natural gas (C) recycling and using solar (D) recycling and using coal


Output: C