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': 'A patient is on periodic renal dialysis. Minor oral surgery should be performed \nSelect and explain. \nA. One day before dialysis, B. On the of dialysis, C. One day after dialysis, D. One week after dialysis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]