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.

[Q]: Sentence: A stick of gum that is slid across a classroom desk travels pretty slow compared to a stick of gum that is pushed across a home office desk. Question: Which surface is the most rough? (A) classroom desk (B) home office desk
[A]: B

[Q]: Sentence: A desk is less bumpy then a table. Question: Which surface will allow a computer to move faster when slid across it? (A) desk (B) table
[A]: B

[Q]: Sentence: James has rigorous fencing lessons in the morning, and in the evening goes to see a film at the cinema with his girlfriend. Question: Where is he less likely to be sweaty? (A) While fencing (B) While watching a movie
[A]:
A