Which of the following statements are true?int n(float)

1. n is a function taking an argument of type float and returning an integer
2. n is a function of type float
3. n is a function taking an argument of type int and returning a floating point number
4. All of above
5. None of these

The argument that is passed to a function f is of float type and the function finally returns a value that id is of integer type.