If Neuron X Is Repeatedly Stimulating Neuron Z with an Excitatory

Multiple Choice

If neuron X is repeatedly stimulating neuron Z with an excitatory neurotransmitter, then

A) several simultaneous action potentials might be initiated on neuron Z
B) the membrane potential on neuron Z would increase
C) spatial summation would be occurring on neuron Z
D) the postsynaptic neuron in this situation would have to reach threshold voltage
E) none of the above would have to occur