What is the output of the HashSet

HashSet<String> set =

new HashSet<String>(Arrays.asList(new String[]{"Java","J2EE",null})) ;

 

Iterator<String> setInterator = set.iterator() ;

while(setInterator.hasNext()){

       System.out.println(setInterator.next()) ;

}

 

Answers:

 

A) NullPointerException

B) HashSet doesn't allow null

C) Runtime Exception

D) Java

    J2EE