Suppose you are on the design team for a new e-book reader. What are the primary classes and functions that the C++ program for your reader will need? You should include an inheritance diagram for these classes. Based on the inheritance diagram, write a C++ program thatincludes ways for customers to buy new books, view their list of purchased books, and read their purchased books. Suppose you are on the design team for a new e-book reader. What are the primary classes and functions that the C++ program for your reader will need? You should include an inheritance diagram for these classes. Based on the inheritance diagram, write a C++ program thatincludes ways for customers to buy new books, view their list of purchased books, and read their purchased books