In the Center of Porter's Five Forces Model Is Competition

Multiple Choice

In the center of Porter's Five Forces model is competition. Which of the below represents the four outer boxes?

A) Buyer power, systems power, threat of false entrants, and threat of substitute products or services
B) Buyer power, systems power, threat of new entrants, and threat of substitute products or services
C) Buyer power, supplier power, threat of new entrants, and threat of substitute products or services
D) Business power, supplier power, threat of new entrants, and threat of powerful services