This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'Depolarization is due to \nSelect and explain. \nA. Influx of sodium, B. Influx of potassium, C. Efflux of sodium, D. All', 'role': 'user'}, {'content': 'Answer: A \nExplanation: I depolarization negative internal charge becomes less negative This is due to opening of sodium gates Ref:Guyton and Hall textbook of medical physiology 12th edition,page number:66,67', 'role': 'assistant'}]