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: if a river ran through a region, what would be found close by? (A) land mass susceptible to water encroachment (B) active life coral reef (C) acid rain susceptible area (D) very active volcanic mountains

Output: A


Input: Consider Input: Locusts historically always affect crops (A) in the sky (B) disadvantageously (C) near water (D) positively

Output: B


Input: Consider Input: When the ground shakes, this will make (A) the sun shake (B) a roof shake (C) an airplane shake (D) a fish shake


Output: B