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Which of the following are necessary for Run-time Polymorphism? | |
A. | The overridden base method must be virtual, abstract or override. [Wrong Answer] |
B. | Both the override method and the virtual method must have the same access level modifier. [Wrong Answer] |
C. | An abstract method is implicitly a virtual method. [Wrong Answer] |
D. | All of the above [Correct Answer] |