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

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

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

2 Subroutine definitions cannot be nested.

3 Subroutine can be called recursively.

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

5 Subroutine calls can be nested.