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.
--------
Question: Sentence: Rolling a golf ball along the fairly is very easy, but rolling one along tall grass is difficult. Question: Which surface will let a golf ball roll for a longer distance? (A) fairway (B) tall grass

Answer: fairway


Question: Sentence: Mike's truck is slower then his car. Question: If he drives both for an hour on the freeway, which will have gone the smaller distance? (A) truck (B) car

Answer: truck


Question: Sentence: Marla is running around the track, while her mom lags behind pushing the baby's stroller. Question: Who take a longer time to make a lap? (A) Marla (B) her mom

Answer:
her mom