問題詳情
63
Which three are valid? (Choose three.) 1. p0 = p1; 2. p1 = p2, 3. p2 = p4; 4. p2 = (ClassC)p1; 5. p1 = (ClassB)p3; 6. p2 = (ClassC)p4;
(A) 123
(B) 126
(C) 235
(D) 156
Which three are valid? (Choose three.) 1. p0 = p1; 2. p1 = p2, 3. p2 = p4; 4. p2 = (ClassC)p1; 5. p1 = (ClassB)p3; 6. p2 = (ClassC)p4;
(A) 123
(B) 126
(C) 235
(D) 156