When you define an abstract method, how do you use it in a derived class?

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Question:When you define an abstract method, how do you use it in a derived class?

1.Abstract methods cannot be used in derived classes.

2.In your derived class, overload the method.

3.In your derived class, override the method.

4.In your derived class, declare the method as virtual.

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  1. When you define an abstract method, how do you use it in a derived class?
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