A car gets 20 kilometers per gallon of gasoline. How many gallons of gasoline would the car need to travel 120 kilometers?  Choose the correct choice from the following options:
A) 8.5 gallons
B) 5 gallons
C) 7 gallons
D) 5.5 gallons
E) 6 gallons

Rationale: "each 20 kilometers , 1 gallon is needed . we need to know how many 20 kilometers are there in 120 kilometers ? 120 / 20 = 4.5 * 1 gallon = 6 gallons correct answer e"
Answer: E