Your Friend Tells You That His Doctor Has Just Prescribed

Your friend tells you that his doctor has just prescribed a sedative to combat persistent insomnia.He asks for your opinion about taking the sedative.You should advise him to

A) take non-prescription sleeping pills instead.
B) be aware of the danger of drug-dependency insomnia.
C) expect occasional paradoxical sleep if he takes the sedative for an extended period.
D) tell him to expect to experience hyperactivity during his waking hours.