What Does Mills Mean by "To Remain Merely Local Is

What does Mills mean by "to remain merely local is to fail"?

A) Those elites who do not seek power and prestige via a national (or even global system) will not endure as elites even at a local level.
B) It means to neglect avenues of power, such as the World Wide Web.
C) Small-town mayors, business people, and the like risk losing power at the national level.
D) Increasing urbanization and like trends have erased the distinction of the "local" as well as any localized power elite.