variable initialization

[may leung]

public class Base{
private int i;

static public void main(String[] a) {
System.out.println("Value is: " + i);
}
}
Select most appropriate answer(s).
a) Value is: 0
b) Compile time error. Can't access the private variable i defined in class Base.
c) Compile time error. Can't make a static reference to nonstatic variable i in class Base.
d) Runtime error. Variable i is uninitialized
e) Compile time error. Variable i is uninitialized
f) None
the ans is C. is that mean all the variable used in the main method should be static?? Can anybody clarify for me??
Thank you~~

[Tom Tang]

Yes, if you want to access those variables directly in the main method. But you can always access non-static members via an object.