The Most Powerful of the Five Competitive Forces Is Usually

The most powerful of the five competitive forces is usually the

A) competitive pressures that stem from the ready availability of attractively priced substitute products.
B) competitive pressures associated with rivalry among competing sellers in the industry for buyer patronage.
C) competitive pressures that emerge from close collaboration with suppliers.
D) competitive pressures associated with the potential entry of new competitors.
E) competitive pressures from the bargaining power and leverage that large customers are able to exercise.