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: Northern countries have extensive erosion due to (A) glacial liquification (B) cola mining (C) more frequent tornadoes (D) meteors
Example Output: A

Example Input: A vehicle rounds a corner and slips, squealing. The tires at that point experienced (A) less friction (B) more friction (C) free falling (D) zero friction
Example Output: B

Example Input: If food is cooked what kind of energy is added to it? (A) solar (B) cold (C) hotness (D) freezing
Example Output:
C