Which of the Following Is Not a Factor to Consider

Which of the following is not a factor to consider in identifying an industry's dominant economic features?

A) Market size and growth rate
B) The extent of backward integration of buyer needs and requirements
C) Whether the products or services of rival firms are becoming more or less differentiated
D) Strength of driving forces and competitive forces
E) The pace of technological change, scale economies and experience curve effects, and product innovation