The Following Is Generally True of the Age Structure of Cities

The following is generally true of the age structure of cities: __________.

A) urban populations are younger than rural counterparts in less developed countries, but this pattern is reversed in North America
B) urban populations are older than rural counterparts in industrialized countries
C) urban populations are older than rural counterparts in U.S. metropolitan areas, but this is a uniquely American phenomenon
D) urban populations are younger than their rural counterparts