The output of the following code is ____________.
LinkedHashSet set1 = new LinkedHashSet<>();
(""New York"");
LinkedHashSet set2 = (LinkedHashSet)( ());
(""Atlanta"");
(""Dallas"");
System.out.println(set2);
1) [New York]
2) [New York, Atlanta]
3) [New York, Atlanta, Dallas]
4) [New York, Dallas]
