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'.

[EX Q]: Sentence: A potato rolling on a cutting board experiences low resistance, while one rolling around on a wood floor experiences high resistance. Question: Which surface allows the potato to roll a greater distance? (A) cutting board (B) wood floor
[EX A]: A

[EX Q]: Sentence: The tire of a unicycle heats up more when ridden through the street compared to when it is ridden through the road. Question: Which surface will let the unicycle go a greater distance? (A) road (B) street
[EX A]: A

[EX Q]: Sentence: John and Flora each head down the beach. John is walking while Flora is running. Question: Who makes it less far down the beach? (A) Flora (B) John
[EX A]:
B