You are given a sentence, a question and two answer options ('A' and 'B'). Your task is to find the correct answer (return the string of the correct option, not 'A' or 'B') for the given question.

Ex Input:
Sentence: A glider moves at a lower rate of speed through the treetops then through the air. Question: Which surface is smoother? (A) treetops (B) air

Ex Output:
air


Ex Input:
Sentence: David was playing whiffleball in the backyard. He hit the ball and it rolled quickly on the soil. He then hit the ball again and it rolled more slowly in a mulched area. Question: Where would the ball roll the longest distance? (A) soil (B) mulch

Ex Output:
soil


Ex Input:
Sentence: Manny and Kevin want to travel cross country. Manny takes a plane and Kevin takes a car. Question: Who crosses the country first? (A) Kevin (B) Manny

Ex Output:

Manny