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: Consumers eat other what? (A) oxygen (B) animal toys (C) rays (D) weaker bugs

Output: D


Input: Consider Input: Which likely increased atmospheric CO2 recently? (A) sustainable fisheries (B) electric cars (C) motorcycles (D) ant populations

Output: C


Input: Consider Input: What do city-dwellers eat? (A) dirt (B) rocks (C) Ohio State (D) crops


Output: D