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 Q]: This can be used to light up a light bulb (A) grass (B) dirt (C) stones. (D) biofuel
[EX A]: D

[EX Q]: A frog would most likely eat (A) a cockroach (B) another frog (C) a maple leaf (D) a mouse
[EX A]: A

[EX Q]: If a person is blind and needs to know the color of a sign, they (A) have someone describe it (B) fill out a form (C) are out of luck (D) make a best guess
[EX A]:
A