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 battery converts chemical energy into (A) energy stored due to the relative positions of charged particles or electric fields (B) energy stored due to the bombardment of particles (C) energy stored between the cells of nonadjacent particles (D) energy that is broken down in particles
Example Output: A

Example Input: An exertion on a thing that is going against the thing's intended direction, when in motion will (A) melt it (B) oppose it (C) speed it up (D) burn it
Example Output: B

Example Input: What can you use to protect your eyes from the sun? (A) shoes (B) pants (C) nails (D) sheet of paper
Example Output:
D