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
Renal papillary necrosis is seen in -a)  Thalassemiab)  DMc)  Phenacetin abused)  Alcoholisme) Cortical necrosis 
Select and explain. 
A. abc, B. bcd, C. ac, D. bd
B: bcd
Answer: B: bcd 
Explanation: None