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': 'Resting membrane potential of Myocytes is \nSelect and explain. \nA. -90 mV, B. -70 mV, C. -50 mV, D. -60 mV', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]