Michael Porter Proposed That Business-Level Strategies Originate with the Primary

Michael Porter proposed that business-level strategies originate with the primary competitive forces in the firm's environment;these forces are

A) the threats of new entrants and the bargaining power of buyers and suppliers.
B) the threats of substitute products and the services and competitive rivalries.
C) the threats of new entrants and substitute products or services,the bargaining power of suppliers and buyers,and competitive rivalries.
D) the threats of government paperwork and tax increases,the bargaining power of suppliers,and competitive rivalries.
E) the bargaining power of suppliers.