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:
if a chemical reaction occurs, it might have been triggered by which of these? (A) a person yelling at it (B) a person walking by it (C) a person looking at it intently (D) a person cranking up the room heater

Ex Output:
D


Ex Input:
Consumers eat other what? (A) oxygen (B) animal toys (C) rays (D) weaker bugs

Ex Output:
D


Ex Input:
Tides can change in different locations because (A) A higher power (B) God (C) Magic (D) the pacific's bottom

Ex Output:

D