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: Terrie leads her dog team to deliver some food and other things to someone in a snowbound cabin. Terrie's dogs pull the empty sled to a nearby supply station, then pull the loaded sled on to the snowbound cabin. Question: In which situation will the dogs have more difficulty in getting the sled moving swiftly? (A) when the sled is empty (B) when the sled is weighed down with supplies
Example Output: B

Example Input: Sentence: Biff was trying to prove to the bar that he was very strong. Question: Which would be a better thing to rip in half to show off? (A) Phone Book (B) Letter
Example Output: A

Example Input: Sentence: A grocery bag experiences more resistance sliding across a store floor then across a house floor. Question: Which floor will force the grocery bag to move slower across it? (A) house floor (B) store floor
Example Output:
B