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: Cows know there is salt in a mineral lick because (A) they have receptors on their tongue that allow them to experience spice and seasonings (B) a cow in the ocean told them it was there (C) it's on their side of the pasture's fence (D) they evolved where there were great redwood trees
Example Output: A

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 mantle is (A) anger (B) magic (C) passion (D) solid bulk
Example Output:
D