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: Pulse accelerates (A) when cooling down after a work out (B) when running pace increases (C) when running pace slows (D) when entering into a sleep state
Example Output: B

Example Input: Heat exposure at higher temperatures without ability to regulate internal body temperatures will result in the expiration of which of these? (A) ace of spades (B) bored ghosts (C) large bridge (D) gila monster
Example Output: D

Example Input: If you want to walk over a lake, which of these is necessary? (A) happy dogs (B) freezing temperatures (C) meowing cats (D) hot lava
Example Output:
B