Which of the following statements are correct about an interface used in C#.NET? 1 An interface can contain properties, methods and events. 2 The keyword must implement forces implementation of an interface. 3 Interfaces can be overloaded. 4 I

Which of the following statements are correct about an interface used in C#.NET?

1 An interface can contain properties, methods and events.

2 The keyword must implement forces implementation of an interface.

3 Interfaces can be overloaded.

4 Interfaces can be implemented by a class or a struct.

5 Enhanced implementations of an interface can be developed without breaking existing code.