You are given a sentence, a question and two answer options ('A' and 'B'). Your task is to find the correct option for the given question. Write down the answer index: 'A' or '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: 
B