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 activity is a part of the wheel of organic life? (A) having sex (B) black holes (C) nuclear meltdowns (D) supernova

Ex Output:
A


Ex Input:
A vehicle stops when brakes are pressed because (A) the tires are being halted by pressure (B) the streets are bumpy (C) the roads have friction (D) the tires are unable to create friction

Ex Output:
A


Ex Input:
storms can do what to seeds via high altitudes (A) disperse them (B) plant them (C) destroy them (D) drown them

Ex Output:

A