Definition: 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: A person feeds their cows corn. They grow an acre of corn each year for the herd. They add another thirty cows to their herd, so they (A) burn the corn (B) grow less corn (C) plant several acres (D) remove some cows
Output:
C