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: A dog toy thrown across a grassy field travels at a lower rate of speed compared to one thrown across a dirt field. Question: Which field is the least rough? (A) grassy field (B) dirt field
dirt field

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
concrete deck

Sentence: Jim and Bob are running on the track.  Jim has a hurt knee and can't run as fast. Question: After a half hour, who has run further? (A) Jim (B) Bob

Bob