Given a pre-generics implementation of a method:11. public static int sum(List list) {12. int sum = 0;13. for ( Iterat

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Given a pre-generics implementation of a method:11. public static int sum(List list) {12. int sum = 0;13. for ( Iterator iter = list.iterator(); iter.hasNext(); ) {14. int i = ((Integer)iter.next()).intValue();15. sum += i;16. }17. return sum;18. }What three changes allow the class to be used with generics and avoid an unchecked warning? (Choose three.)

A. Remove line 14.
B. Replace line 14 with "int i = iter.next();".
C. Replace line 13 with "for (int i : intList) {".
D. Replace line 13 with "for (Iterator iter : intList) {". E. Replace the method declaration with "sum(List<int> intList)". F. Replace the method declaration with "sum(List<Integer> intList)".