Suppose that classes Dog and Cat derive from Animal, which in turn derives from Creature. Suppose further that pDog, pCat, pAnimal, and pCreature are pointers to the respective classes. Finally, suppose that Animal and Creature are both abstract classes. Will the statement: Animal a ; compile? If not, why not? Will the statement pAnimal = new Cat ; compile? If not, why not? Will the statement pCreature = new Dog ; compile? If not, why not? Will the statement pCat = new Animal ; compile? If not, why not?