Why Might a Psychologist Insist That a Client Get a Physical

Why might a psychologist insist that a client get a physical exam?

A) The psychologist feels that a second opinion is necessary to finalize a diagnosis
B) The psychologist believes that medication might be needed and only a few psychologists have prescription writing privileges
C) The psychologist wants to rule-out any physiological reasons for the presenting symptoms
D) The psychologist is aware that biological factors are the cause of mental disorders