This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': 'Surgery is carried out in which stage of general anesthesia \nSelect and explain. \nA. Plane I, B. Plane II, C. Plane III, D. Plane IV', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]