Maria Has to Choose Between Driving and Taking a Train

Multiple Choice

Maria has to choose between driving and taking a train to destination A. Traveling by train will cost her $400 and will take 4 hours. Driving to destination A takes 6 hours, and the required amount of gasoline costs $250. Her opportunity cost of time is $15 per hour.
-Refer to the scenario above.Maria should choose to ________.

A) drive, as it will save her $120
B) travel by train, because it is quicker
C) drive, as it will give her a real saving of $150
D) travel by train, as it will save her $30 in travel time