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 you had a hammer, you would find ____ nails made of ____ (A) wood; wood (B) iron; wood (C) wood; iron (D) iron; iron

Ex Output:
D


Ex Input:
In the desert it was harder to find a (A) stream (B) cactus (C) dry bed (D) canyon

Ex Output:
A


Ex Input:
some level of crushing and pressure would be needed for sedimentary rock formation (A) this is accurate (B) maybe true (C) this is untrue (D) all of these

Ex Output:

A