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: Mary and Billy are at the beach skipping rocks.  Billy works out everyday, but Mary is weaker. Question: Who can throw the rocks farther? (A) Mary (B) Billy

Ex Output:
A


Ex Input:
Sentence: A segway can travel a much greater distance inside a shopping mall before needing a recharge then when it is cruising around outside on the street. Question: Which surface is rougher? (A) shopping mall (B) street

Ex Output:
A


Ex Input:
Sentence: Dan is a professional athlete. Joann is a middle-aged accountant. Question: If they were both to throw a football, who is more likely to throw it farther? (A) Dan (B) Joann

Ex Output:

B