You will be given a definition of a task first, then some input of the task.
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'.

Sentence: A prep counter is smoother then a serving table when a burrito is slid across it. Question: Which surface will force the burrito to travel at a lower rate of speed? (A) prep counter (B) serving table
Output:
B