The Driving Forces in an Industry

The driving forces in an industry

A) are usually triggered by changing technology or stronger learning/experience curve effects.
B) are usually spawned by growing demand for the product,an outbreak of price cutting,and big reductions in entry barriers.
C) are major underlying causes of change in industry and competitive conditions and have the biggest influences in reshaping the industry landscape and altering competitive conditions.
D) appear when an industry begins to mature but are seldom present during early stages of the industry life cycle.
E) are usually triggered by shifting buyer needs and expectations or by the appearance of new substitute products.