An abstract class Employee has two subclasses, Permanent and Temporary. The Employee class contains an abstract method named setType$().$ Before you can instantiate Permanent and Temporary objects, which of the following statements must be true?

You must code statements for the setType$()$ method within the Permanent class.

You must code statements for the setType$()$ method within both the Permanent and Temporary classes.

You must not code statements for the setType$()$ method within either the Permanent or Temporary class.

You can code statements for the setType$()$ method within the Permanent class or the Temporary class, but not both.