This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Kidney, Subject name: Pathology
[{'content': 'Causes of papillary necrosis in kidney are/is: \nSelect and explain. \nA. Diabetes mellitus, B. Sickle cell disease, C. Analgesic abuse, D. All', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. d (All). (Ref. Robbin's, Pathology, 6th/pg.924)CAUSES OF PAPILLARY NECROSIS (mnemonic--POSTCARD):# Pyelonephritis# Obstructive uropathy# Sickle cell disease# TB and trauma, tubular necrosis, transplant rejection# Cirrhosis (alcoholism, coagulopathy)# Analgesics# Renal vein thrombosis# Diabetes, Dehydration", 'role': 'assistant'}]