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: Jamaican natives have a dark skin tone do to (A) lack of nutrients (B) camouflage (C) solar radiation (D) their diet
Example Output: C

Example Input: Alligators (A) eat gar (B) eat only foliage (C) have live births (D) are warm-blooded
Example Output: A

Example Input: A person is cooled by a liquid coming from the (A) clothes (B) eyes (C) hair (D) skin
Example Output:
D