Which sequence of events that underlie neurotransmission is correct?
a. Neurotransmitter release
b. Ca2+ entry into the presynaptic terminal
c. Axonal action potential
d. Fusion of synaptic vesicle with the presynaptic plasma membrane
e. Opening of voltage-gated Ca2+ channels
f. Depolarization of the presynaptic terminalA、 abcdef B、 cfebdaC、 fcebdaD、 cfbeda