11. public void addStrings（List list） {  12. list.add（”foo”）；  13. list.add（”bar”）；  14. }  What must you change in this method to compile without warnings？（） 

A.  add this code after line 11： list = （List） list；

B.  change lines 12 and 13 to： list.add（”foo”）； list.add（”bar”）；

C.  change the method signature on line 11 to： public void addStrings（List list） {

D.  change the method signature on line 11 to： public void addStrings（List list） {

E.  No changes are necessary. This method compiles without warnings.