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:
What could be used as an electrical conductor (A) A penny (B) Shoe laces (C) Wood (D) A button

Ex Output:
A


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:
Which is nonmagnetic? (A) nail (B) washing machine (C) traffic cone (D) refrigerator

Ex Output:

C