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: Kevin took a plane from NY to Chicago while Esther took a plane from NY to LA which takes longer at the same speed. Question: Who travelled further? (A) Kevin (B) Esther

Ex Output:
A


Ex Input:
Sentence: Kelly is standing on the planet Mercury. Allison is on Pluto. Each girl is looking up into the sun. Question: Which girl has a brighter view of the sun? (A) Allison (B) Kelly

Ex Output:
A


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