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: In a bowl of water with the sun shining on it, what happens to the water after four hours? (A) the water is growing algae (B) there is less water (C) the water is dirty (D) there is more water
Example Output: B

Example Input: A ship navigates with a magnetic compass because it is (A) unpredictable (B) waterproof (C) tradition (D) predictable
Example Output: D

Example Input: Of the following household items, which is recyclable? (A) cooking oil (B) banana peel (C) paint (D) soda can
Example Output:
D