Which Statement About Cocaine Administration and Absorption Is True

Which statement about cocaine administration and absorption is true?

A) The cocaine metabolite benzoylecgonine can be detected for only a few hours after the last dose of drug.
B) Slow absorption occurs with intravenous and smoked forms of cocaine.
C) Cocaethylene is a metabolite of cocaine and alcohol that exerts an effect similar to cocaine, but that has a long half-life.
D) Smoking crack cocaine is addictive because the brain receives a large surge of drug, and its effects are very long-lasting.