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: An early example of harnessing wind power would be (A) unicorns (B) santas flying reindeer (C) trumps windy speeches (D) cloth on masts
Example Output: D

Example Input: One way to recycle paper is by using it to (A) build oceans (B) build spaceships (C) wipe grime (D) build cars
Example Output: C

Example Input: Which is most helpful to a constipated Elephant? (A) cheese (B) bubblegum (C) oats (D) empty promises
Example Output:
C