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:
Coal and oil directly removed from the ground are (A) directly consumed (B) thrown away (C) made into products (D) stored underground

Ex Output:
C


Ex Input:
How can it be shown that an electrical conductor is a vehicle for the flow of electricity? (A) holding an electrified fence can kill you (B) electricity is unable to conduct well through rubber shoe soles (C) sticking a fork into an electrical outlet is safe if it is plastic (D) electricity is a volatile thing

Ex Output:
A


Ex Input:
The diminishing supply of this nonrenewable resource is leading to advancements in automotive technology (A) petrol (B) coal (C) trees (D) steam

Ex Output:

A