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: Animals adapt to their what? (A) appearance (B) feet (C) skin (D) nature places
Example Output: D

Example Input: Plants often use which enticing substance when attracting pollinators? (A) sweet things (B) songs (C) comedy (D) bees
Example Output:
A