Regarding Barbiturates, Which of the Following Statements Is FALSE

Regarding barbiturates, which of the following statements is FALSE?

A) Mild doses of barbiturates have an effect similar to caffeinism.
B) High doses barbiturates cause severe mental confusion or even hallucinations.
C) Barbiturates are often taken in excess amounts because the first dose may be followed by others as the user becomes uninhibited and forgetful.
D) Overdoses first cause a loss of consciousness and then the brain centers that control heartbeat and breathing are severely depressed with the result being death.