A. 4， 4
B. 4， 5
C. 5， 4
D. 5， 5
E. The code will not compile.

A. The default constructor initializes method variables.
B. The compiler always creates a default constructor for every class.
C. The default constructor invokes the no-parameter constructor of the superclass.
D. The default constructor initializes the instance variables declared in the class.
E. When a class has only constructors with parameters， the compiler does not create a default constructor.