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").

Ex Input:
Someone is driving at night. The day was warm, but now the night is cool, and there is a lot of mist that is difficult to see through. The mist is prevalent because (A) humidity from the day condensed as night progressed (B) warm air is usually found in daytime (C) it is always misty at night (D) the cool air makes everything feel warm

Ex Output:
A

Ex Input:
A person uses all of a renewable resource that they had in a bucket. They can get more of it by (A) putting on fresh clothing (B) visiting a desert area (C) burning the bucket in a fire (D) leaving the bucket out in a storm

Ex Output:
D

Ex Input:
During cellar respiration I might find myself with (A) candy (B) natural face water (C) magic (D) time travel powers

Ex Output:
B