Jim Smith’s dealership sells Fords, Hondas, and Toyotas.

The dealership keeps information about each car manufacturer with whom they deal so that they can get in touch with them easily. The dealership also keeps information about the models of cars that they carry from each manufacturer. They keep information like list price, the price the dealership paid to obtain the model, and the model name and series

(e.g., Honda Civic LX). They also keep information about all sales that they have made (for instance, they will record a buyer’s name, the car bought, and the amount paid for the car). In order to contact the buyers in the future, contact information is also kept

(e.g., address, phone number). Create a class diagram for this situation. Apply the rules of normalization to the class diagram to check the diagram for processing efficiency.