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

Ex Output:
D


Ex Input:
Webbed feet aid in what (A) penguins laying eggs on ice (B) fish hiding in coral reefs (C) gulls dive bombing fish from the sea (D) ducks chasing prey underwater

Ex Output:
D


Ex Input:
A planet rotating causes cycles of day and night on that planet, like on (A) Orion (B) the Moon (C) Jupiter (D) Pluto

Ex Output:

C