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:
What is it called when a cell converts oxygen and carbohydrates into carbon dioxide, water, and energy? (A) adaptation (B) breathing (C) food transformation (D) catabolic reactions

Ex Output:
D

Ex Input:
Lucy left a pan half full of water in the sun and it dried up in one afternoon. (A) the pan was in the cool shade (B) a squirrel dumped the water of its head to cool off (C) butterflies drank it all (D) it was the summertime

Ex Output:
D

Ex Input:
A change in the Earth is (A) a person's hair growing (B) a wooded area appearing on land that was once part of the ocean (C) a wooded area existing next to an ocean (D) the moon moving around the Earth

Ex Output:
B