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:
Which event can lead to the human caused change of an environment? (A) seasonal storms (B) annual flooding (C) natural woodland fires (D) clear cutting

Ex Output:
D


Ex Input:
Where would jumping be the hardest? (A) Mars (B) Jupiterr (C) the Earth (D) the moon

Ex Output:
B


Ex Input:
Frogs withstand noisy areas easily when they eat insects because they have (A) croaking sounds (B) problems jumping (C) zero eardrums (D) slimy skin

Ex Output:

C