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:
In order for trees to use sunlight they must (A) their roots (B) the light switch (C) CPR (D) respire

Ex Output:
D


Ex Input:
Who'd be able to see a rose is pink at night? (A) rocks (B) the Rio Grande (C) a beeping sound (D) lemurs

Ex Output:
D


Ex Input:
A rock tumbler revolves to (A) collect bees (B) trap clowns (C) facet diamonds (D) smooth gemstones

Ex Output:

D