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: An herbivore like a giraffe will only consume (A) green matter (B) sticks (C) algae (D) cheese
Example Output: A

Example Input: the alps were formed by rock what? (A) growing (B) melting (C) erupting (D) creasing
Example Output: D

Example Input: A sugar cube in vinegar will (A) disappear (B) explode (C) start to fly (D) become hard
Example Output:
A