What Does the Textbook Cite as a Significant Factor in Recent

Multiple Choice

What does the textbook cite as a significant factor in recent heroin overdoses?

A) The ready availability of heroin on the streets.
B) The mixture of heroin and morphine injected into the arms of the drug user.
C) The high-purity concentration of new heroin derivatives (chiva and black tar) from Columbia.
D) Both A and B.