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: Grooves in the ground are a sign of (A) sink holes (B) erosion (C) water accumulation (D) high traffic
Example Output: B

Example Input: a student leaves a nail line on a mineral sample, so that mineral can be described as what? (A) a mineral (B) a soft mineral (C) a liquid mineral (D) a mineral melt
Example Output: B

Example Input: In an arid location, any various lifeforms will have to (A) work harder for nutriment (B) find food quite easily (C) find fast, easy nutriment (D) always eat their fill
Example Output:
A