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:
A thing which moves very little over quite a lot of time is a (A) pack of wolves (B) racing horses (C) falling rocks (D) giant ice brick

Ex Output:
D


Ex Input:
A bean sprout will beautifully boom if given plenty of access to (A) salted dirt (B) H2O (C) sticky napkins (D) searing heat

Ex Output:
B


Ex Input:
If a sand grain is in a tree house unexpectedly, a likely culprit responsible for its movement is (A) ghosts (B) gales (C) spirits (D) angels

Ex Output:

B