B) They had a complex civilization that was destroyed by the Spanish conquerors.
By the time of the Spanish invasion, the Aztecs had devloped a strong civilizations, they had a system of trade & commerce and were quite wealthy. They also had a primitive form of "police" and a banking system.
The correct answer is Canada.
While some went to the United Kingdom after the war, many took boats out of American cities and ended up in Halifax, now in Nova Scotia, before spreading out throughout what is today Canada.