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: An average 10 year old boy and an average 15 year old boy throw a football. Question: Which boy will throw the football the shortest distance? (A) 10 year old boy (B) 15 year old boy

Ex Output:
B


Ex Input:
Sentence: Elliot weighs 20 pounds more than Leon. Question: Who has a bigger gravity pull? (A) Elliot (B) Leon

Ex Output:
B


Ex Input:
Sentence: A steel ball has a greater mass then a pebble. Question: Which object has a stronger gravitational field? (A) steel ball (B) pebble

Ex Output:

B