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").

Example Input: If you had a hammer, you would find ____ nails made of ____ (A) wood; wood (B) iron; wood (C) wood; iron (D) iron; iron
Example Output: D

Example Input: What requires energy for growth? (A) a car (B) a hippopotamus (C) a house (D) a desk
Example Output: B

Example Input: A chemical change is likely to happen in which body part? (A) stomach (B) heart (C) leg (D) ear
Example Output:
A