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 is maintained due to \nSelect and explain. \nA. K+, B. Na+, C. Mg++, D. Cl-', 'role': 'user'}, {'content': 'Answer: A \nExplanation: K+ is responsible for resting membrane potential It diffuses passively across the k+ channal from high to low concentration Ref:Guyton and Hall textbook of medical physiology 12th edition,page number:34,35,36', 'role': 'assistant'}]