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: Medicine
[{'content': 'Glycated haemoglobin reflects blood glucose of preceding - \nSelect and explain. \nA. 01-week, B. 2-3 weeks, C. 4-5 weeks, D. 6-8 weeks', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]