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:
A a switch turns something with batteies on because: (A) electrons are then disturbed (B) a piece of metal closes the circuit (C) it lets the acid free (D) the circuit is opened

Ex Output:
B


Ex Input:
Living underground can be used for hiding from what? (A) food (B) hunters (C) dirt (D) water

Ex Output:
B


Ex Input:
A miner is searching for stones and rocks that can be used for other purposes than for building. He wants to be able to find and process something worthwhile, so he looks for rocks with (A) aluminium (B) sand (C) roxys (D) pearl

Ex Output:

A