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 shopping cart rolls by itself across a parking lot. Then it gets to a field. The cart rolls only a little more after it enters the field. Question: Why does this happen? (A) the parking lot is a rougher surface (B) the field is a rougher surface
[A]: A

[Q]: Sentence: Louis notices that when he pushes his book on the carpet, it doesn't go as far as when he pushes the book on the kitchen floor. Question: Which surface has greater resistance? (A) kitchen floor (B) carpet
[A]: A

[Q]: Sentence: Jane and Dirk are roommates living in the same house. Question: If they take the same bus at the same time in the same bus stop, who will travel a shorter distance if Jane gets out of the bus one stop before Dirk does? (A) Jane (B) Dirk.
[A]:
B