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: Sam is skating outside. He glides across the dirt with no problem, but falls when he skates on gravel. Question: Which ground has less friction? (A) dirt (B) gravel

A: B
****
Q: Sentence: A tape measure sliding across plywood has more resistance then one sliding across a writing desk. Question: Which surface will make the tape measure get hotter? (A) writing desk (B) plywood

A: A
****
Q: Sentence: You hold a candle in your hand and look at it. Then you see an identical candle in a neighbor's window across the street. Question: Which candle will look like it's giving off more light? (A) The candle in your hand (B) The candle in your neighbor's window

A:
B
****