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:
As vehicles become more efficient petro consumption (A) increases (B) stops (C) decreases (D) stay the same

Ex Output:
C


Ex Input:
with which could you tell the exact size of an object? (A) a plain stick with irregular shape (B) a plastic tape with graduated markings (C) a thermometer with mercury in it (D) a metal cooking spoon

Ex Output:
B


Ex Input:
After a long winter's hibernation, a female bear and her two cubs exit their cave and begin to search for food. One place they check is (A) dry sticks (B) dirt pile (C) berry bushes (D) dead leaves

Ex Output:

C