instruction:
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'.
question:
Sentence: A boomerang thrown into a windy sky heats up quite a bit, but one thrown into a calm sky stays about the same temperature. Question: Which surface puts the least amount of friction on the boomerang? (A) windy sky (B) calm sky
answer:
B

question:
Sentence: Bob took his toy car outside to play with it. He rolled it on the street and then he rolled it in the grass. He noted that the toy car rolled much faster in the street. Question: Which surface caused more friction? (A) The street (B) The grass
answer:
B

question:
Sentence: Rose's mom took Rose roller skating one night. Rose's mom didn't feel like skating so she sat and watched as Rose skated around the rink many times. Question: When Rose and her mom get in the car to ride home, whose seat will least need a towel to soak up sweat? (A) Rose's seat (B) Rose's mom's seat
answer:
B