Someone Excluded from an RCT for Depression Because of a Comorbid

Someone excluded from an RCT for depression because of a comorbid panic disorder could be included in an RCT for panic disorder. The implications of this are that there are likely to be efficacious treatment options for most patients and in working with patients with comorbid diagnoses psychologists must

A) consult medical doctors.
B) tell the client that it is nearly impossible to address both conditions.
C) decide which diagnosis or condition should be addressed first.
D) give up on their client ever being healthy.