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: Pathology
[{'content': 'To know long term diabetic status which of the \nfollowing test is done \nSelect and explain. \nA. random blood sugar, B. fasting blood sugar, C. glycated haemoglobin, D. glucometer', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]