Object Oriented Programming (OOPs)

Question : 47 of 72

Marks: +1, -0

Given:

class ClassA {}
class ClassB extends ClassA {}
class ClassC extends ClassA {}
and:
ClassA p0 = new ClassA();
ClassB p1 = new ClassB();
ClassC p2 = new ClassC();
ClassA p3 = new ClassB();
ClassA p4 = new ClassC();

Which three are valid?

p0 = p1;
p1 = p2;
p2 = p4;
p2 = (ClassC)p1;
p1 = (ClassB)p3;
p2 = (ClassC)p4;

Validate

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