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:
Mothers have many roles, one of which is (A) gestating and birthing (B) making good dinner (C) creating fun activities (D) watching the babies

Ex Output:
A


Ex Input:
How does erosion impact a river? (A) enlargening (B) warming (C) heightening (D) shrinking

Ex Output:
A


Ex Input:
Warm weather organisms live in what kind of climates? (A) icey (B) summerlike (C) frosty (D) frigid

Ex Output:

B