This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Unknown
[{'content': 'Excitatory post synaptic potential is due to \nSelect and explain. \nA. K+ influx, B. Na+ efflux, C. Na+ influx, D. Ca++ influx', 'role': 'user'}, {'content': 'Answer: C \nExplanation: EPSP (Excitatory post synaptic potential) -\n1. Definition: the increase in voltage above the normal resting potential — that is to a less negative value — is called\nEPSP because if this potential rises high enough, it will elicit on action potential in the neuron, thus exciting it.\n\xa0\xa0\xa0 EPSP is due to depolarization.\n2. Production à rapid influx of Na+ to the interior neutralised part of the negativity of RMP à RMP \xaded from - 65 to\xa0\xa0\xa0\xa0\xa0 - 45 my à EPSP à excite the neuron.', 'role': 'assistant'}]