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 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:
Greenhouses are great for plants like (A) Pizza (B) Lollipops (C) Candles (D) French beans

Ex Output:
D


Ex Input:
nest sitting is left up to the (A) daddy (B) the embryo's creator (C) strangers (D) male siblings

Ex Output:

B