Which Statement About the Various Viewpoints of Clinical Psychology Is

Which statement about the various viewpoints of clinical psychology is TRUE?

A) Various perspectives coexist, and they often conflict and compete with one another.
B) Since the late 1950s, the biological perspective is the primary perspective taught in medical schools.
C) Although many perspectives exist, the psychoanalytic perspective remains the dominant perspective in the field.
D) Among the various perspectives, those most highly regarded are those based on the influence of external factors.