The Nurse Notes That a Client Has an Order for a Central

The nurse notes that a client has an order for a central nervous system stimulant.The nurse recalls that this type of drug has which of the following mechanisms of action?

A) Decreases the production of excitatory neurotransmitters
B) Increases the presynaptic amount of neurotransmitter
C) Blocks the activity of the inhibitory neurons
D) Enhances the release of $\gamma$ -aminobutyric acid and glycine