Identify a Factor That Determines the Level of Competition and Long-Term

Identify a factor that determines the level of competition and long-term profitability of an industry.

A) The degree of rivalry between competitors is low in industries with many equally sized competitors.
B) The threat of substitute products can increase the profitability of industry competitors.
C) The bargaining power of suppliers doesn't affect the industry's profitability.
D) The threat of new competitors raises the level of competition.