Before Contact with Europeans,the Economic System of Canada's Northwest Coast

Before contact with Europeans,the economic system of Canada's Northwest Coast Aboriginal peoples,with their strong cultural art form and traditions,complex authority structure,and semi-nomadic lifestyle,which necessitated following the food cycle for harvesting season and living in permanent settlements in the winter,would be classified as

A) pastoralism.
B) hunting and gathering.
C) horticulturalism.
D) agricultural.