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: Despite what some think, instead  around themselves, our planet spins around (A) pluto (B) the moon (C) the milky way (D) the sun
Example Output: D

Example Input: A tree must depend upon, for its support (A) A large fibrous mass (B) plants on the forest floor (C) the wooden welfare state (D) massive redwoods on the backs of turtles
Example Output: A

Example Input: Transpiration involves (A) H2O traveling about a daffodil's system (B) pollen traveling about the plant's system (C) the production of new oxygen molecules (D) the production of new seedlings
Example Output:
A