Classes for each of the 50 U. S. states, including California, NewYork, and Texas have a parent class named State. The State class needs to declare a method called getAbbreviation() that returns the U. S. Postal Service abbreviation (CA, IL, NY, etc.) for a represented state. The State class itself, however, represents a concept that does not have an abbreviation and should not provide its own implementation of the method. The child classes of State will inherit and be forced to implement getAbbreviation(). It is important that the State class provides some sort of method declaration so that the following code works. State s = new Florida(); System. out. println(s. getAbbreviation()); State t = new Alaska(); System. out. println(t. getAbbreviation()); Which of the following code fragments for the State class provides the best declaration of the getAbbreviation() method for this situation?