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: How does erosion impact a river? (A) enlargening (B) warming (C) heightening (D) shrinking

Output: A


Input: Consider Input: In an arid location, any various lifeforms will have to (A) work harder for nutriment (B) find food quite easily (C) find fast, easy nutriment (D) always eat their fill

Output: A


Input: Consider Input: When is fog most likely to occur (A) 3 p.m. (B) midnight (C) 6 p.m. (D) noon


Output: B