Given:Which code inserted at line 4 guarantees that this program will output [1 2]()?

Given:Which code, inserted at line 4, guarantees that this program will output [1, 2]()？

A.Set set = new TreeSet();

B.Set set = new HashSet();

C.Set set = new SortedSet();

D.List set = new SortedList();

E.Set set = new LinkedHashSet();