A Client Asks the Nurse, Why Do I Have to Go

A client asks the nurse, Why do I have to go to counseling? Why can't I just take medications? The best response by the nurse would be,

A) Both therapies are effective. You can eventually choose one or the other.
B) You cannot get the full effect of your medications without cognitive therapy as well.
C) As soon as your medications reach therapeutic level, you can omit the therapy.
D) Medications combined with therapy help you change how well you function.