The rivalry among competing sellers tends to be more intense when

A. buyers incr high cost in switching to rival brands

B. Rivals have low fixed costs and low inventory storage costs

C. industry members have too much inventory or significant amounts of idle production capacity, especially if the industry's product entails high storage costs or high fixed costs

D. a few large sellers have the majority of sales and dominant market shares

E. The products of rival sellers are strongle differentiated and the loyalty of buyers to their preferred brand is high