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").

Example 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
Example Output: C

Example Input: Chlorophyll is good for allowing plants to absorb energy and (A) is dry (B) is dead (C) is clear (D) is healthy
Example Output: D

Example Input: Invasive plants in an ecosystem often lead to (A) overpopulation (B) rainy weather (C) rashes (D) GMOs
Example Output:
A