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:
Drinking cola daily removes layers from the surface of (A) enamel on molars (B) spoons (C) porcelain (D) the coffee pot

Ex Output:
A


Ex Input:
We can calculate a speed if we know a number of (A) gallons (B) millimeters (C) dollars (D) pounds

Ex Output:
B


Ex Input:
Which would be a logical hypothesis after viewing a white substance on the floor, with a yellow carton on the counter? (A) milk was spilled (B) white juice spilled (C) bleach was spilled (D) was an illusion

Ex Output:

A