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:
If a person restores a garden complete with oaks, then they have replaced (A) concrete (B) jelly (C) steam (D) a resource

Ex Output:
D

Ex Input:
What are a source of fibers? (A) water (B) plantlife (C) rocks (D) air

Ex Output:
B

Ex Input:
if a person rips up their notebook, what happens? (A) all the mentioned options (B) the shape becomes different (C) it takes a new structure (D) it loses its original form

Ex Output:
A