Economists Alchian and Demsetz Suggest That Firms Are Formed When

Economists Alchian and Demsetz suggest that firms are formed when

A) the sum of what individuals can produce alone is greater than what they can produce as a team.
B) someone wants to earn profits.
C) someone comes up with the idea that customers will buy a new product.
D) the sum of what individuals can produce as a team is greater than the sum of what they can produce alone.