You are to create an efficient OO application that implements an application for use by a Car Dealer. Phase I of this assignment requires that you create an application for one car model. When a dealer decides which model to sell, an object will be created. The dealer can have up to 1000 cars of this model on the lot (all of which cost the same), there are four available colors. To allow extensibility, a vehicle object can be created with no information available, or with the model of the car, the dealer cost and retail cost.