4. redefine the following CDAccount so that it is a class rather than a structure. Use the same member variables in CDAccount but make them private. Include member functions for each of the following: one to return the initial balance, one to return the balance at maturity, one to return the interest rate, and one to return the term. Include a constructor that sets all of the member variables to any specified values, as well as a default constructor. embed your class definition in a test program. struct CDAccount \{ double balance; double interest_rate; int term; //months until maturity \}; Your answer: A. B