In the early part of the 20th century (1900-1920), the market for medical services is best described as:

Group of answer choices

A. a monopoly controlled by physicians through the American Medical Association.

B. a poorly developed market characterized by underutilization due to the lack of health insurance.

C. a commodity market characterized by undifferentiated products and price competition.

D. a monopoly controlled by hospitals through the American Hospital Association.