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': 'Measurement of Hb1AC is required for? \nSelect and explain. \nA. Screening of controlled diabetes, B. Monitoring of diabetes, C. Screening of uncontrolled diabetes, D. Confirmation of diabetes', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]