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: John is flying across the country in a plane. Janet is walking across town. Question: Who is likely to have gone further after an hour? (A) John (B) Janet

Ex Output:
B


Ex Input:
Sentence: Pauline couldn't read by the faint moonlight, so she went inside and sat by the brightness of the living room lamp instead. Question: Which source of illumination was nearer to Pauline? (A) The moon was nearer (B) The lamp was nearer

Ex Output:

A