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:
An example of conservation is (A) jogging (B) reducing ethanol use (C) hiking (D) raking leaves

Ex Output:
B


Ex Input:
Which sustains life yet stopped growing? (A) air (B) a bush (C) a rock (D) a felled tree

Ex Output:
D


Ex Input:
A thing that is experiencing transpiration is likely to be (A) a shovel (B) a doorbell (C) a hydrangea (D) a mouse

Ex Output:

C