Ethnographic Evidence Has Revealed That Traditionally, Pawnee Women Worked Wood

Ethnographic evidence has revealed that traditionally, Pawnee women worked wood, and among the Hidatsa, women made boats. Cases such as these suggest that

A) patterns of division of labor by gender are culturally general-not universal.
B) the division of labor by gender is a natural characteristic of human societies.
C) exceptions to cross-cultural generalization are actually the rule.
D) biology has nothing to do with gender roles.
E) anthropologists are overly optimistic about finding a society with perfect gender equality.