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 person wants to mine something that will attract metals. The person decides to search out some (A) ceramic stones (B) iron pebbles (C) glass beads (D) plastic beads

Ex Output:
B


Ex Input:
If a thing is up and then is down then it is (A) seared (B) invisible (C) wet (D) transported

Ex Output:
D


Ex Input:
Sea horses require (A) leather harnesses (B) jockeys (C) black stallions (D) the sun

Ex Output:

D