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': 'Spontaneous release of acetylcholine at the neuromuscular junction produces \nSelect and explain. \nA. Miniature end-plate potential, B. Action potential, C. Post-tetanic potential, D. Resting membrane potential', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Spontaneous release of acetylcholine in small amounts normally happens in synapses. This can result in miniature end plate potential.', 'role': 'assistant'}]