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:
You can find ferrous metals in (A) Grass (B) Vehicle scraps (C) Wood (D) Glass

Ex Output:
B


Ex Input:
The basic outside of our planet is comprised of (A) types of stone (B) frozen green grass (C) solid ice balls (D) molten hot lava

Ex Output:
A


Ex Input:
A camera can take an image and (A) preserve it (B) edit it (C) lock it in (D) produce it

Ex Output:

A