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: A wolf would eat (A) an ibex (B) a mountain (C) a tree (D) a cloud
Example Output: A

Example Input: The Norwegian government maintains a special storage chamber 800 miles from the Arctic Circle for use in the event of a man-made or natural disaster. The storage structure is built in Arctic permafrost and holds (A) seeds that are growing now (B) seeds for the Arctic animals (C) seeds that spread the permafrost (D) preserved seeds for reproducing edible crops
Example Output: D

Example Input: If John wants to save a little every month, what can he do to help with his water bill? (A) dripping the sink at night (B) taking a bath twice a day (C) flushing the toilet more (D) repairing all his pipes
Example Output:
D