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: Physiology
[{'content': 'Excitatory post synaptic potential is \nSelect and explain. \nA. Depolarisation of post synaptic membrane by opening of K+ channels, B. Hyperpolarisation of post synaptic membrane by opening of Cl- channels, C. Depolarisation of post synaptic membrane by opening of Ca2+ channels, D. Hyperpolarisation of post synaptic membrane by opening of Na+ channel', 'role': 'user'}, {'content': 'Answer: C \nExplanation: EPSP: Depolarisation of post synaptic membrane by opening of Na+\xa0or Ca2+\xa0channels\nIPSP : Hyperpolarisation of post synaptic membrane by opening of Cl-\xa0or K+\xa0channels', 'role': 'assistant'}]