TASK DEFINITION: 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.
PROBLEM: Sentence: A shopping cart rolls by itself across a parking lot. Then it gets to a field. The cart rolls only a little more after it enters the field. Question: Why does this happen? (A) the parking lot is a rougher surface (B) the field is a rougher surface

SOLUTION: the field is a rougher surface

PROBLEM: Sentence: Will is about to have a birthday party. His mother has some supplies left over from other parties. She puts some straws on the counter. There are red ones and yellow ones. Will picks up a yellow straw and tries to bend it into a donut shape, but it breaks. He picks up a red one and does the same thing and he's able to touch the two ends together. Question: Which of the straws is less pliable? (A) the red straw (B) the yellow straw

SOLUTION: the yellow straw

PROBLEM: Sentence: A vineyard floor is more rough then a kitchen floor. Question: Which floor makes the grape get hotter when rolled across it? (A) vineyard floor (B) kitchen floor

SOLUTION:
vineyard floor