Modify your program for Programming Project 2 so that it checks that the discount is not negative, and that the price of the item does not drop to zero after applying the discount. If it does violate these conditions, then your program should use an assert to exit the program.

Which of the following statements is false? a. a class can directly inherit from class object. b. if the class you're inheriting from declares instance variables as private, the inherited class can access those instance variables directly. c. a class's instance variables are normally declared private to enforce good software engineering. d. it's often much more efficient to create a class by inheriting from a similar class than to create the class by writing every line of code the new class requires.