Given:Which three are valid?() A.p0 = p1;B.p1 = p2;C.p2 = p4;D.p2 = (ClassC)p1;E.p1 = (ClassB)p3;F.p2 = (ClassC)p4;
Given:Which three are valid?()
A.p0 = p1;
B.p1 = p2;
C.p2 = p4;
D.p2 = (ClassC)p1;
E.p1 = (ClassB)p3;
F.p2 = (ClassC)p4;
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