Which of the following statements are correct about functions used in C#.NET? 1 Function definitions cannot be nested. 2 Functions can be called recursively. 3 If we do not return a value from a function then a value -1 gets returned. 4 To ret

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

1 Function definitions cannot be nested.

2 Functions can be called recursively.

3 If we do not return a value from a function then a value -1 gets returned.

4 To return the control from middle of a function exit function should be used.

5 Function calls can be nested.