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 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:
Which of the following is correct? (A) The earth's strong gravitational pull causes a waxing gibbous to form (B) astrology causes a waxing gibbous to form (C) star maps cause a waxing gibbous to form (D) government satellites cause a waxing gibbous to form

Ex Output:
A


Ex Input:
Much iron is in (A) Earth's second layer (B) cups of coffee (C) the sky (D) empty

Ex Output:

A