Social Patterns Entrenched in Hierarchy and Stratification Have Emerged

Social patterns entrenched in hierarchy and stratification have emerged:

A) only more recently in human history when compared to egalitarian social patterns.
B) much earlier in human history when compared to egalitarian social patterns.
C) most prominently among hunter-gatherer societies.
D) as the basis of Amish and Hutterite communities.
E) mostly in societies with a strong principle of reciprocity.