A retailer sells electronic entertainment centers. The customers have the choice to choose their TV, DVD player, and the sound-system. For simplicity, assume each of these components has the following properties: price, description, and warranty cost per year. We have the following manufactures for the different parts, assume each manufacturer has only one model for each of the following components:

TV	DVD Player	Sound System
Sony	Panasonic	Sony
Samsung	Toshiba	Panasonic
Sharp	Samsung	Toshiba

The customer buys an entertainment center composed of the 3 components bundle listed above, however, it is the customer who decides which manufacturer/model to choose to be part of the 3-components bundle. Show the UML Design class diagram for the above. Name and document the design pattern/patterns used in your application.