The Main Difference Between a Psychiatrist and a Psychologist Is

The main difference between a psychiatrist and a psychologist is that:

A) a psychiatrist is usually a psychoanalyst, whereas a psychologist is usually a behaviorist.
B) a psychologist is a medical doctor, whereas a psychiatrist is a researcher who studies illnesses.
C) a psychiatrist is a medical doctor who can provide therapy, whereas a psychologist can provide therapy but cannot prescribe medications.
D) a psychiatrist works exclusively in hospitals, whereas a psychologist works exclusively in mental health clinics.