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:
Once the grounds frost over and the air grows chilled (A) beaches are opened (B) humans go naked (C) birds lay eggs (D) roses die

Ex Output:
D

Ex Input:
A burrito needs to be cooked so it (A) has heat removed (B) is made hollow (C) is burned black (D) has heat applied

Ex Output:
D

Ex Input:
By picking up polypropylene we can make our ecosystem (A) ugly (B) worse (C) dead (D) better

Ex Output:
D