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
Glycated haemoglobin reflects blood glucose of preceding - 
Select and explain. 
A. 01-week, B. 2-3 weeks, C. 4-5 weeks, D. 6-8 weeks
D: 6-8 weeks
Answer: D: 6-8 weeks 
Explanation: None