Write a program that shows you a menu offering you the choice of addition, subtraction, multiplication, or division. After getting your choice, the program asks for two numbers, then performs the requested operation, prints out the expression evaluated and its result. The program should accept only the offered menu choices. It should use type float or double for the numbers and allow the user to try again if he or she fails to enter a number. In the case of division, the program should prompt the user to enter a new value if 0

Consider the following code snippet: #ifndef cashregister_h#define cashregister_hconst double max_balance = 6000000.0; class cashregister{public: cashregister(); cashregister(double new_balance); void set_balance(double new_balance); double get_balance() const; private: double balance[12]; }; double get_monthly_balance(cashregister bk, int month); #endifwhich of the following is correct? a)the header file is correct as given.b)the definition of max_balance should be removed since header files should not contain constants.c)the definition of cashregister should be removed since header files should not contain class definitions.d)the body of the get_monthly_balance function should be added to the header file.