Definition: 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'.
Input: Sentence: A plastic bottle rolling across a picnic table experiences low friction, while a plastic bottle rolling across a lawn experiences high friction. Question: Which surface will make the plastic bottle get hotter as it rolls across? (A) picnic table (B) lawn
Output:
B