Which among the following best supports the fact that, contrary to Gloger's Rule, many of dark complexioned human beings reside in temperate and even arctic regions today?

When a population of lighter skin people migrates into far northern areas, natural selection makes their skin dark in only in the immediate next generation.

Gloger's Rule is a hypothesis that cannot be applied to unverified scenario.

Human societies had become very active in moving around the planet in recent centuries.

When a population of lighter skin people migrates into far northern areas, natural selection makes their skin dark in all the next generations.