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': 'For diagnosis of diabetes mellitus, fasting blood glucose level should be more than: \nSelect and explain. \nA. 126 mg/dl, B. 140 mg/dl, C. 100 mg/dl, D. 200 mg/dl', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Answer is A (126mg/dl): For diagnosis of diabetes mellitus, fasting blood glucose level should be more than or equal to 126 mg/dl or 7mmol/l', 'role': 'assistant'}]