Regarding Barbiturates and Tranquilizers, Which of the Following Statements Is/are

Multiple Choice

Regarding barbiturates and tranquilizers, which of the following statements is/are TRUE?

A) Repeated use of barbiturates can cause physical dependence.
B) Some abusers of barbiturates suffer severe emotional depression that may end in suicide.
C) When tranquilizers are used at too high a dosage or for too long a time, addiction can occur.
D) All of these statements are true.