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: Miriam was playing lacrosse in the backyard. She flung the ball and it rolled slowly on the lawn, then quicker when going across the concrete deck floor. Question: Which surface gave less resistance to the ball? (A) lawn (B) concrete deck
Output:
concrete deck