188 
What three changes allow the class to be used with generics and avoid an unchecked warning? (Choosethree.)   1. Remove line 14.  2. Replace line 14 with "int i = iter.next();".  3. Replace line 13 with "for(int i : intList){".  4. Replace line 13 with "for(Iterator iter : intList){".  5. Replace the method declaration with "sum(List＜int＞ intList)".  6. Replace the method declaration with "sum(List＜Integer＞ intList)".
(A) 123
(B) 246
(C) 136
(D) 456