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: A man's boat is about to sink, so he throws his food and boxes of stuff overboard. Question: At which point would his boat be faster? (A) Before the stuff is thrown overboard (B) After the stuff is thrown overboard.

Ex Output:
B


Ex Input:
Sentence: A matchbox can slide across a greenhouse floor, but it doesn't move as fast as when it is slid across the backyard. Question: Which surface is the smoother one? (A) greenhouse floor (B) backyard

Ex Output:
A


Ex Input:
Sentence: A dog toy thrown across a grassy field travels at a lower rate of speed compared to one thrown across a dirt field. Question: Which field is the least rough? (A) grassy field (B) dirt field

Ex Output:

B