Brian Ferguson Found That Warfare and Aggression Among the Yanomamo

Brian Ferguson found that warfare and aggression among the Yanomamo was not simply a part of their existence or nature,as Napoleon Chagnon famously described in The Fierce People.Which of the following is NOT one of Ferguson's conclusions?

A) Villages located near outposts did not want to move away from their access to manufactured goods.This lead to an exhaustion of game resources and the ending of sharing patterns which helped to maintain peaceful relations.
B) New Western outposts trading manufactured goods drew nearby Yanomamo settlements and these settlements monopolized the goods,creating tensions with other groups.
C) Government agents provided weapons to Yanomamo who were favourable to state development of the Amazon.
D) Western goods increased the likelihood of raids,and to discourage raids it became advantageous to cultivate reputations for violence.