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': 'Good diabetic control is said to be present when glycosylated haemoglobin is \nSelect and explain. \nA. 7-9%, B. >13%, C. 10-12%, D. 3-4%', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]