As a Rule,the Stronger the Collective Impact of Competitive Pressures

As a rule,the stronger the collective impact of competitive pressures associated with the five competitive forces,

A) the stronger are the industry's driving forces.
B) the lower the combined profitability of industry members.
C) the fewer companies that can achieve a competitive advantage via anything other than being the industry's low-cost leader.
D) the larger the number of competitive advantage opportunities for industry members.
E) the greater the number of industry key success factors.