You are given a sentence, a question and two answer options. Your task is to write down the index ('A' or 'B') of the **incorrect** option for the given question.

Ex Input:
Sentence: A billiard ball has a greater mass then a basketball. Question: Which ball has a stronger field of gravity? (A) billiard ball (B) basketball

Ex Output:
B

Ex Input:
Sentence: Every object has gravity. Jupiter is the largest planet in the solar system. Question: Which object has a weaker gravitational pull? (A) Moon (B) Jupiter

Ex Output:
B

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:
B