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 act out some very bizarre dreams since sedatives can cause REM behavior disorder.