3. Consider the scenario given below for a library management system.

• A library has books that it issues to its users and is available at the premises of the library for the authorized member.
• For systematic arrangements, each book is assigned ISBN and a title. Due to high demand of books, the library maintains one or more copies of each book.
• Copies of each book can be issued to member for certain limited time for borrowing but with some rules and restrictions.
• For every item issued, the library records the user id, name and the current borrowing limit. The copy (loan information) is recorded such as ISBN, copy number and on loan to whom.
• For borrowers, the library maintains their id, name and current borrowing limit.

a) Draw a sequence diagram for borrowing book use case. (10 marks)

b) Draw a behavioral state chart machine for the process of borrowing book. (5 marks)