34. HashMap props = new HashMap(); 35. props.put(”key45”, “some value”); 36. props.put(”key12”, “some other value”); 37. props.put(”key39”, “yet another value”); 38. Set s = props.keySet(); 39. // insert code here What, inserted at line 39, will sort the keys in the props HashMap?()
- A Arrays.sort(s);
- B s = new TreeSet(s);
- C Collections.sort(s);
- D s = new SortedSet(s);