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: With more people eating cereal there comes a need for more (A) butter (B) top soil (C) water (D) corn
Example Output: D

Example Input: If a plant's extended portion is larger, it will (A) soak up more light (B) put out less pollen (C) be wilting very soon (D) fold in on itself
Example Output: A

Example Input: A source of sugar in an ecosystem is (A) air (B) soil (C) tree (D) bird
Example Output:
C