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': 'Repolarization is due to opening of which channels \nSelect and explain. \nA. Na, B. HCO3, C. K, D. Cl', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Repolarization is due to opening of voltage-gated K+ channels. (Ref: Textbook of physiology AK Jain 5th edition page no.36)', 'role': 'assistant'}]