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:
Oil platforms originating from a number of oceanic placements can be related to an unintentional release of what? (A) oil pumps (B) nuclear fission (C) biological created fuel (D) solar energy

Ex Output:
C


Ex Input:
When cutting down rain forests, it is important to keep in mind air quality. When too many trees are cut down in a given area, there may be decrease in the air's (A) quality (B) carbon dioxide (C) helium amounts (D) carbin dioyide levels

Ex Output:
A


Ex Input:
during the winter, a man's central heating stops functioning. Which of these could be a lifeline? (A) cranking on the air conditioner (B) leaving the oven lid open (C) leaving the fan on (D) leaving the window open

Ex Output:

B