You are given a sentence, a question and two answer options ('A' and 'B'). Your task is to find the correct answer (return the string of the correct option, not 'A' or 'B') for the given question.
--------
Question: Sentence: Toby went ice skating during the winter and noticed that he hardly had to put any effort into moving forward when he switched from the sidewalk to the ice on the pond. Question: Which surface was smoother? (A) Sidewalk (B) Ice pond

Answer: Ice pond


Question: Sentence: A skateboard wheel gets hotter when rolling over a gravel driveway compared to rolling over a dirty path. Question: Which surface is providing more friction? (A) gravel driveway (B) dirty path

Answer: gravel driveway


Question: Sentence: A flatbed truck has a really rough time driving over a landfill and a rather easy time driving over a parking lot. Question: Which surface will let the flatbed truck travel a greater distance? (A) landfill (B) parking lot

Answer:
parking lot