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: Surgery
[{'content': 'Which of the following is not a cause for Acute pancreatitis? \nSelect and explain. \nA. Gall stones, B. Hemochromatosis, C. Alcohol intake, D. Anti retroviral drug', 'role': 'user'}, {'content': "Answer: B \nExplanation: Common causes of acute pancreatitis are gallstones, alcohol, ERCP, trauma, post surgery, dysfunction of sphincter of Oddi and by drugs such as antiretroviral drugs, azathioprine, tetracycline, valproic acid, 6 mercaptopurine, sulfonamides and estrogen. Hemochromatosis is not a cause of acute pancreatitis. Reference: Harrison's Principles of Internal Medicine 18e, chapter 313.", 'role': 'assistant'}]