A neurotransmitter is released at a synapse. Which of the following occurs last?
A) an action potential is produced in the postsynaptic membrane
B) calcium ions enter the presynaptic terminal
C) synaptic vesicles release neurotransmitter by exocytosis
D) neurotransmitter flows rapidly across the synaptic cleft
E) neurotransmitter binds with the receptor on the postsynaptic membrane