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: raccoons eat what? (A) debris (B) people (C) fire (D) dirt
Example Output: A

Example Input: Volcanoes, have a (A) Esophagus (B) Camels (C) Emotional experience (D) Cigarettes
Example Output: A

Example Input: Glacier melt (A) is an effect of too many polar bears (B) is an effect of an abundance of CO2 in the environment (C) is an effect of deforestation (D) is an effect of oxygen saturation
Example Output:
B