What is the output of this program?import java.util.*;

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What is the output of this program?

import java.util.*;
   public class HashSet_Example 
    {
        public static void main(String args[]) 
        {
            HashSet object = new HashSet();
            object.add("I");
            object.add("L");
            object.add("U");
            System.out.println(object + " " + object.size());
        }
    }

1. [U, I, L]
2. [I, L, U] 3
3. [I, L, U]
4. [U, I, L] 3
5. None of these

Correct Option: D

HashSet obj creates an hash object which implements Set interface, object.size() gives the number of elements stored in the object object which in this case is 3.