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
Which of the following is associated with Renal Papillary Necrosis 
Select and explain. 
A. Alcohol, B. Heroine, C. Morphine, D. Tramadol
A: Alcohol
Answer: A: Alcohol 
Explanation: Answer is A (Alcohol) Chronic Alcoholism is an established cause of Renal Papillary Necrosis.