The following code will produce student lists those who took cs210 or cs211, and those who took cs210 and cs211. However, this code produces wrong output. Explain why and fix it to produce correct results. public class ma4 I public static void main (String[] args) throws FileNotFoundExceptiont HashSet cs210 new HashSet(); - cs210.add ("John"); cs210.add ("Bill"); cs210.add ("Emma"); HashSet cs211 new HashSet(); = cs211.add ("Emma"); cs211.add ("Olivia"; cs211.add ("Kim"); cs210.addAll (cs211); System.out.println("CS210 or CS211: " + cs210); cs210.retainAll (cs211); System. out.println ("CS210 and CS211:"cs210)