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': 'Glucose tolerance test is usually done to assess: \nSelect and explain. \nA. Acute pancreatitis, B. Carcinoma of head of pancreas, C. Acinar function of the pancreas, D. Endocrine dysfunction of pancreas', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]