Functions and Subroutines - C# Programming Questions and Answers

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

A function cannot be called from a subroutine.
The ref keyword causes arguments to be passed by reference.
While using ref keyword any changes made to the parameter in the method will be reflected in that variable when control passes back to the calling method.
A subroutine cannot be called from a function.
Functions and subroutines can be called recursively.

1, 2, 4

2, 3, 5

3, 5

4, 5

None of these