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:
Dirt is moved from one part of a forest to another, and travels across a field to get there. The movement is (A) caused by gusts (B) due to clouds (C) made by trees (D) because of litter

Ex Output:
A


Ex Input:
The circulatory system brings oxygen to the body from where? (A) The chest (B) The brain (C) The feet (D) The stomach

Ex Output:
A


Ex Input:
What is most likely to happen to a roof as the sun comes into contact with it? (A) it will fall apart (B) it will cry out in pain (C) it will heat up over time (D) it will cool down over time

Ex Output:

C