$($a$)$ Consider the following scenario:

A library system keeps track of books. Information is kept about its

members, book and book copies. Details of a member such as memberId,

name, address, phone number and email are recorded. Book details such

as title, author, publisher, and catalog number. Individual copies contain

information such as copy number, edition, publication year, ISBN, book

status $($whether it is on the shelf or loaned out$),$ and date due back in$.$ The

librarian will access the library system to issue books, record reservations,

generate return requests for reserved books and record books being

returned.

Returning a book may involve generating an availability notification if the

returned book has been reserved by another member. If an availability

notification is generated then the librarian sends it out to the member. When

a book is requested to be issued or requested to be reserved then the system

validates details on the membership card as well as validating that the

requested book is one stocked by the library. If the membership card is

invalid or the library does not stock the book then the request is rejected. If

a book is requested for issue but is on$-$loan then that book will be reserved.

Members of the library can display details of books stocked.

There may be multiple copies of books held in the library. When a book is

borrowed the borrowing date is noted and when the book is returned the

return date is noted. The details held about each reservation include who

the current borrower$($s$)$ is and who has reserved the book.

Draw a class diagram for the above scenario.