The objective of this case study is to develop a software product to computerize the business operations of a boolestore in Amman. The book store deals with three kinds of publications: Newspapers, books, and magazines. The bookstore buys and sells all of these documents and in order to have direct information related to each item, the bookstore records the title of all documents, the number of pages, and the price as well as the number of pages. Besides this, the bookstore deals with many publishers of the documents that it sells and buys. Regarding books, the bookstore wants also to keep track of the number of chapters in the book and for each chapter its title and its number of pages. For newspapers, we also distinguish between those with colored graphics and those with black-white colors. As for magazines, we have weekly magazines and monthly magazines. To speed up the purchase of documents, the bookstore keeps in its database information about publishers such as his name and his location as well as contact telephone number. In order to reach a great number of clients, the bookstore decided to launch a website to allow clients to order publications and pay the corresponding fees online. A client can requestmore than one publication at a time. He can also check online the status of its order and when we will get the requested books, magazines, or newspapers. As for payment of fees, the cllent can pay either by checks, cash, or credit card. It should be noted that the client can cancel an orcer passed within the last six hours. a) Glve a use case dlagram for the system above. b) Give a class diagram for the above system c) Glve a use case description for the client order 1-what implantation method you suggest 2- there are a mistake in the design, where 3- x suggested to use MVC, y disagree, what is your opinion and why 4- two quality for user and 2 for the company in the paregraph