What is the result？（）

A.int foo（）{/* more code here */}
B.void foo（）{/* more code here */}
C.public void foo（）{/* more code here */}
D.private void foo（）{/* more code here */}
E.protected void foo（）{/* more code here */}

A.Cat is-a Animal
B.Cat is-a Jumper
C.Dog is-a Animal
D.Dog is-a Jumper
E.Cat has-a Animal
F.Beagle has-a Tail
G.Beagle has-a Jumper

A.420 is the output.
B.An exception is thrown at runtime.
C.All constructors must be declared public.
D.Constructors CANNOT use the private modifier.
E.Constructors CANNOT use the protected modifier.