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").

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

Ex Output:
D


Ex Input:
When is fog most likely to occur (A) 3 p.m. (B) midnight (C) 6 p.m. (D) noon

Ex Output:
B


Ex Input:
Which of the following provides the best reason for squirrels vacating their forest? (A) The forest is overrun with chipmunks (B) The forest is being harvested for lumber (C) Many acorns can be found on the forest floor (D) They want to start a new life

Ex Output:

B