what does the virtual keyword signify in c, Basic, C#.NET

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Question:What does the virtual keyword signify in C#?

A It indicates that a method cannot be overridden. 
B It allows a method to be overridden in a derived class. 
C It creates an instance of a class. 
D It declares a class as abstract.

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+ ExplanationIt allows a method to be overridden in a derived class.
Analysis: The virtual keyword is used in a method declaration to indicate that the method can be overridden in any derived class, enabling polymorphism.

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