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 Q]: Sentence: Joe was the fastest runner in his school. Another student at his school, Larry, challenged him to race the length of the football field. Question: Which student made it in the least amount of time? (A) Joe (B) Larry
[EX A]: B

[EX Q]: Sentence: A tree trunk is thicker then a tree leaf. Question: Which part of the tree is the stronger one? (A) leaf (B) trunk
[EX A]: A

[EX Q]: Sentence: A piece of toast heats up less when slid across a counter then when slid across a cutting board. Question: Which is the rougher surface? (A) cutting board (B) counter
[EX A]:
B