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:
What would light bounce off of when it hits it? (A) a wall painted grey (B) old worn out leather (C) a freshly waxed car (D) a street made of gravel

Ex Output:
C


Ex Input:
The cell membrane keeps a cell from (A) replicating (B) getting lost (C) falling apart (D) running away

Ex Output:
C


Ex Input:
Skidding causes friction, as seen in (A) rolling a car (B) riding a rhino (C) running a track (D) Nascar races

Ex Output:

D