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:
Which is most harmful to a human? (A) dynamite going off (B) reading email (C) balloons popping (D) opening a soda

Ex Output:
A


Ex Input:
A person thinks they see a UFO. They look closely, but the object becomes hard to see in the night sky as (A) gets closer to the person (B) buys a new house (C) builds a large park (D) it puts distance between them

Ex Output:
D


Ex Input:
What can show how a rainbow is formed by refraction of light by splitting light into all different colors? (A) watching sunlight bounce off a mirror (B) shining a flashlight on a gem (C) shining a flashlight at a mirror (D) looking at a freshly formed diamond

Ex Output:

B