What is the output of this program?import java.util.*; public class Collection_iterators_Example { public static void main(String args[]) { LinkedList listObject = new LinkedList(); listObject.add(new Integer(3)); listObject.add(new Integer(9)); listObject.add(new Integer(7)); listObject.add(new Integer(2)); Iterator itr = listObject.iterator(); Collections.reverse(listObject); while(itr.hasNext()) System.out.print(itr.next() + " "); } }

• A. 2 7 9 3
• B. 3 9 7 2
• C. 2 3 7 9
• D. 7 9 3 2
• E. None of these