Card 30 / 32: Given: 11. class ClassA {} 12. class ClassB extends ClassA {} 13. class ClassC extends ClassA {} and: 21. ClassA p0 = new ClassA(); 22. ClassB p1 = new ClassB(); 23. ClassC p2 = new ClassC(); 24. ClassA p3 = new ClassB(); 25. ClassA p4 = new ClassC(); Which three are valid? (Choose three.)
A) p0 = p1;
B) p2 = p4;
C) p2 = (ClassC)p1;
D) p1 = (ClassB)p3;
E) p2 = (ClassC)p4;

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