Which of the following statements is true with regard to the treatment of somatization disorder?
a. Cognitive-behavioral treatment has been demonstrated in several studies to be the best available treatment.
b. It is relatively easy to treat as long as the patient is willing to participate in therapy.
c. Assignment of a "gatekeeper" physician has been found to cure most patients.
d. It is difficult to treat, and there are no treatments with proven effectiveness.
