Which of the following are legal(enhanced while loop)? : Questions « Utility Classes « SCJP

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2. Utility Classes
3. Questions

public class MainClass{
    public static void main(String[] argv){
        Set<String> names = new HashSet<String>();

    }
}

A.  Iterator<String> iter = names.iterator();
B.  for (String s:names)
C.  while (String s:names)