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:
You can find ferrous metals in (A) Grass (B) Vehicle scraps (C) Wood (D) Glass

Ex Output:
B


Ex Input:
What could be used to find out how much carpet is needed for a room? (A) a tape measure (B) a compass (C) a barometer (D) a beam balance

Ex Output:
A


Ex Input:
It's most likely to rain when the color of the sky looks (A) Seven (B) eggshells (C) meteor strike (D) dark and Silvery

Ex Output:

D