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:
Buttercups can produce (A) their own nutrients (B) grow in space (C) ride horses (D) enter singing competitions

Ex Output:
A


Ex Input:
If an environment experiences a long drought (A) animals will experience a boom in reproduction (B) ponds may dry up and kill off the fish population (C) tadpoles will mature faster into frogs (D) plants will continue to flourish

Ex Output:
B


Ex Input:
A consequence of polluting could be that (A) fish become inedible (B) water tastes gross (C) papers report it (D) trash is overflowing

Ex Output:

A