What Relationship Is the Basis of Psychoneuroimmunology?​

What relationship is the basis of psychoneuroimmunology?​

A) ​Endocrine function affects behavior, and behavior can either raise or lower immune system function.
B) ​Behavior affects the immune system, and immune system function affects health.
C) ​Health and disease affect immune system function, and behavior affects the nervous system as well as the endocrine system.
D) ​The action of the immune system is independent of behavior, and the endocrine and nervous systems are less dependent than previously assumed.