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 depends mainly on \nSelect and explain. \nA. K, B. Na, C. Cl, D. HCO3', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Since K+ permeability is greater than Na+ permeability, therefore, K+ channels maintain the RMP.(Ref: Textbook of physiology AK Jaun 5th edition Page no.35)', 'role': 'assistant'}]