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:
Which two objects would electricity best flow through? (A) a tin can and a plastic fork (B) a steel beam and a soda can (C) an eraser and a wooden pencil (D) human skin and rubber gloves

Ex Output:
B


Ex Input:
Two females usually can produce (A) children (B) a progeny (C) offspring (D) nothing

Ex Output:
D


Ex Input:
What is a unit for measuring heat energy? (A) kg (B) m (C) s (D) F

Ex Output:

D