You will be given a definition of a task first, then some input of the task.
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.

Sentence: Louis notices that when he pushes his book on the carpet, it doesn't go as far as when he pushes the book on the kitchen floor. Question: Which surface has greater resistance? (A) kitchen floor (B) carpet
Output:
carpet