Jack decides to rework the banking system, which already includes the classes BankView, Bank, SavingsAccount, and RestrictedSavingsAccount. He wants to add another class for checking accounts. He sees that savings accounts and checking accounts both have some common attributes and behaviors that they can inherit from a superclass named Account. The bank contains zero or more instances of each of the three types of accounts. Draw a class diagram that shows the relationships among the classes in this new version of the system