This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pre Anesthetic Evaluation, Subject name: Anaesthesia
What is normal range of glycosylated haemoglobin (HbA1c) for adequate glycaemic control in diabetic patient- 
Select and explain. 
A. 6% to 8 %, B. 8 % to 10 %, C. 4 % to 6 %, D. 10 % to 12 %
A: 6% to 8 %
Answer: A: 6% to 8 % 
Explanation: normal Range in glycosylated haemoglobin 7% to 9 % for < 5 yrs 6 % to 8 % for > 5 yrs