A.

B.

C.

D.

A.Pet a = new Dog();

B.Pet b = new Pet();

C.Dog f = new Pet();

D.Dog d = new Beagle();

E.Pet e = new Beagle();

F.Beagle c = new Dog();

A.A C D

B.A B D

C.A B D C

D.A C D D

E.A B C D

A.0 0 30 40

B.Compilation fails.

C.An exception is thrown at runtime.

D.10 20 30 40

A.Option A

B.Option B

C.Option C

D.Option D