The Competitive Pressures on Companies Within an Industry Come from All

The competitive pressures on companies within an industry come from all of the following except

A) those associated with the market maneuvering and jockeying for buyer patronage that goes on among rival firms in the industry.
B) those companies in other industries attempting to win buyers over to their substitute products.
C) those associated with the threat of new entrants into the marketplace.
D) those associated with the bargaining power of suppliers and customers.
E) those associated with environmental factors such as water shortages.