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': 'Renal papillary necrosis is seen in -a)  Thalassemiab)  DMc)  Phenacetin abused)  Alcoholisme) Cortical necrosis \nSelect and explain. \nA. abc, B. bcd, C. ac, D. bd', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]