Which situation relates to the graph?
 A)
 An airplane has 1 gallon of gas remaining, and 1 gallon of gas is used for
 each additional 10 miles flown.
 B)
 An airplane has 1 gallon of gas remaining, and 10 gallons of gas is used for
 each additional 1 mile flown.
 An airplane has 10 gallons of gas remaining, and 10 gallon of gas is used
 for each additional 1 mile flown.
 D)
 An airplane has 10 gallons of gas remaining, and 1 gallon of gas is used for
 each additional 10 miles flown.