A large figure is constructed from hexagonal tiles. It has a central white tile, surrounded by a ring of 6 black tiles, then a ring of 12 white tiles, and finally a ring of 18 black tiles. If a new, larger figure is created by attaching an additional border of white tiles around this figure, what will be the difference between the total number of white tiles and the total number of black tiles in the new figure?
9
11
13
15
17
