You are given a sentence, a question and two answer options ('A' and 'B'). Your task is to find the correct option for the given question. Write down the answer index: 'A' or 'B'.

Ex Input:
Sentence: Ada was playing kickball. She kicked a ball into the gravel and noticed it was warm when she picked it up. She kicked it again onto a grassy hill, but this time the ball wasn't very hot when she retrieved it. Question: In which surface did the ball travel the most? (A) gravel (B) grassy hill

Ex Output:
B


Ex Input:
Sentence: Saturn has greater mass than the Moon of Earth. Question: On which one would you experience stronger gravity? (A) Saturn (B) the Moon

Ex Output:
A


Ex Input:
Sentence: Suppose a sports motorcycle raced a box truck. Question: Which vehicle would hit 60 mph first? (A) Motorcycle (B) Box Truck

Ex Output:

A