The table shows the number of miles that a car travels and the gallons of gasoline it uses to go those distances.

Number of Miles Gallons of Gasoline
115 5
230 10
345 15
How do the unit rates of miles per gallon compare for these two vehicles?

The van travels the same number of miles per gallon as the car.
The van travels 23 more miles per gallon than the car.
The van travels 5 more miles per gallon than the car.
The car travels 5 more miles per gallon than the van.