You are given a sentence, a question and two answer options ('A' and 'B'). Your task is to find the correct answer (return the string of the correct option, not 'A' or 'B') for the given question.
Q: Sentence: A post office counter is less bumpy then a coffee table. Question: Which surface will force a letter to move at a lower rate of speed when slid across it? (A) post office counter (B) coffee table
A:
coffee table