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").

Input: Consider Input: When cutting down rain forests, it is important to keep in mind air quality. When too many trees are cut down in a given area, there may be decrease in the air's (A) quality (B) carbon dioxide (C) helium amounts (D) carbin dioyide levels

Output: A


Input: Consider Input: Max mixed some orange flavored powder in a glass of water until there it was dissolved. His sister tasted it and it tasted like (A) cola (B) dark chocolate milk (C) a citrus fruit (D) lemons and apples

Output: C


Input: Consider Input: Which is able to create its own nourishment from sunlight? (A) roses (B) deer (C) rainbows (D) water buffalo


Output: A