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 person who wants to visit a desert will be sure to pack more (A) winter boots (B) thermal underwear (C) tan shorts (D) snowsuits
Example Output: C

Example Input: What contains nutrients for plants? (A) dirt cheap (B) wind (C) ground minerals (D) soiled clothes
Example Output: C

Example Input: Canyons are generally old, huge, and breathtaking and are (A) brimming to full with sand (B) filled with local wildlife (C) dirty and muddy inside (D) typically materialized with stone
Example Output:
D