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'.

Example Input: Sentence: Stacey is rubbing her fingers on various items at the grocery store. She notices that when she rubs her fingers on the glass jar, it has less resistance than if she rubs her fingers on a pair of corduroy pants. Question: Which object will generate less heat when Stacey rubs her fingers on it? (A) glass jar (B) corduroy pants
Example Output: A

Example Input: Sentence: Greg and Lisa both live 2 miles from the library. Greg takes off on foot. Lisa uses a scooter. Question: Who gets there first? (A) Greg (B) Lisa
Example Output: B

Example Input: Sentence: A raft weighs less then a schooner. Question: Which boat can get up to top speed faster? (A) raft (B) schooner
Example Output:
A