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 student leaves a nail line on a mineral sample, so that mineral can be described as what? (A) a mineral (B) a soft mineral (C) a liquid mineral (D) a mineral melt

Ex Output:
B


Ex Input:
You can work longer when (A) Autumn changes to Winter (B) spring changes to summer (C) tree leaves start falling (D) the first snow starts falling

Ex Output:
B


Ex Input:
Seed dispersal happened when the plant's seeds were (A) sold to a person in another country (B) genetically modified for pesticide resitance (C) destroyed by radiation during processing (D) planted in the same garden

Ex Output:

A