The Principal/agent Notion Is a Central Concept in Health Care

The principal/agent notion is a central concept in health care because:

A) consumers pay physicians as agents to buy medical services for them, such as laboratory and radiology tests.
B) principals such as companies hire agents to help them contract with health systems.
C) a patient trusts a doctor to make the decisions for them.
D) a doctor trusts that the patient will follow their advice.