Which Statement About Pharmacotherapy for Cocaine Dependence Is False

Which statement about pharmacotherapy for cocaine dependence is false?

A) Over 100 blinded placebo-controlled clinical trials have already been conducted to test medications against cocaine dependence.
B) The FDA has approved several effective medications that have been shown to help people overcome their cocaine dependence.
C) Many drugs that have been tested as potential therapeutic agents for cocaine dependence target some aspect of the dopamine system.
D) Dopamine is not the only neurotransmitter system that has been targeted in the search for cocaine medications.