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: A computer mouse moves with ease on a smooth plastic mouse pad, whereas, on the flat wooden desk at times it sticks and does not work. Question: Which surface has more friction? (A) wooden desk (B) plastic mouse pad
[EX A]: B

[EX Q]: Sentence: Justine raises pigeons. She releases two of them from a cage at the same time, to have them race. The white pigeon is faster than the grey pigeon. Question: Which pigeon goes a greater distance? (A) white pigeon (B) grey pigeon
[EX A]: B

[EX Q]: Sentence: A weighty cement mixer and a light motorcycle are waiting at a red light. Question: When the light turns green, which accelerates more slowly? (A) cement mixer (B) motorcycle
[EX A]:
B