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

Ex Output:
D

Ex Input:
What substance found in rocks shares it's name with an object which can take wrinkles from an item worn on the body to cover the skin from the elements? (A) Iron (B) Stove (C) Copper (D) Steamer

Ex Output:
A

Ex Input:
Where would a greenhouse best be used? (A) Bahamas (B) Nebraska (C) Florida (D) Mexico

Ex Output:
B