Cocaine Is a Stimulant Drug That Acts by Blocking the Reuptake

Cocaine is a stimulant drug that acts by blocking the reuptake of dopamine in the nervous system. This means that dopamine stays in the synapse longer and continues to stimulate the postsynaptic neuron. Based on this information you could infer that dopamine affects the postsynaptic neuron by

A) canceling out excitatory potentials generated by other neurons.
B) producing excitatory postsynaptic potentials.
C) producing inhibitory postsynaptic potentials.
D) increasing the strength of the action potential in the presynaptic neuron.