$1.$ Define a class named Book with attributes such as book ID$,$ title, author,and availability status$\mathrm{.}2.$ Implement a class named Library with methods to add books, borrowbooks, return books, and display available books. Print A in this m ethod$\mathrm{.}3.$ Ensure that the library system maintains a record of borrowed books andupdates the availability status accordingly$\mathrm{.}4.$ Implement proper error handling for scenarios such as trying to borrow abook that is not available or returning a book that was not borrowed$\mathrm{.}5.$ Test the library system with multiple users borrowing and returning bookssimultaneously.