WHy should virtual methods be explicitly overridden in C#?

Question

Why should virtual methods be explicitly overridden in C#?

Answer 1

By declaring a method as virtual, you are stating your intention that the method can be overridden in a derived class.

By declaring your implementing method as override, your are stating your intention that you are overriding a virtual method.

By requiring that the override keyword be used to override a virtual method, the designers of the language encourage clarity, by requiring you to state your intentions.