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: Blind people are unable to see what the shapes of things are, but they can still sense it thanks contacting it via their (A) flying (B) singing (C) smiling (D) hands
Example Output: D

Example Input: If a thing has a good impact on nature, it is most likely (A) putting plastics in special containers (B) burning old used tires (C) putting cigarettes out in ponds (D) using aerosol air fresheners
Example Output: A

Example Input: What is a greenhouse? (A) A place for foreign plants (B) A house painted green (C) A secret Army base (D) The opposite of the White House
Example Output:
A