There's a bunch of popular hats around the world so it depends :D
The answer to the given question above would be option A. The type of currency that is now in use in the United States is called FLAT MONEY. This kind of money has a value that is based on the relationship between supply and demand rather than the value of the material that the money<span> is made of. Hope this helps.</span>
It was first celebrated in Canada, in 1882. It was brought to the US by the travelers from Canada and it became a national holiday in Canada in 1894.
16+5 =21. M is 16 if you do 21-5=16