Which of the Following Best Describes the Change in the Prevalence

Multiple Choice

Which of the following best describes the change in the prevalence rate of heroin use in recent years?

A) The prevalence rate of heroin has increased primarily among the urban poor.
B) The prevalence rate of heroin has increased primarily among well-educated people.
C) The prevalence rate of heroin has decreased primarily among women.
D) The prevalence rate of heroin has decreased dramatically across most groups.