A Client Who Presents in the Psychiatric Unit Tells the Admitting

A client who presents in the psychiatric unit tells the admitting nurse that he or she is very depressed and is having a hard time staying clean and sober. Which of the following describes the psychobiology of his or her illness?

A) Depression or other mental illness is an expected outcome of substance abuse recovery.
B) There is heritability and predisposition to alcohol dependence as well as complex environmental influences.
C) Depression or other mental illness should be treated with compatible medications.
D) Depression or other mental illnesses are symptoms of the substance abuse.