This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General physiology, Subject name: Physiology
[{'content': 'Resting membrane potential in ventricular myocardium \nSelect and explain. \nA. -50mV, B. >70mV, C. +70mV, D. -90mV', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ventricular cardiomyocyte membrane potential is about -90 mV at rest, which is close to the potassium reversal potential. When an action potential is generated, the membrane potential rises above this level in four distinct phases.', 'role': 'assistant'}]