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
Most common cause for chronic pancreatitis is 
Select and explain. 
A. Idiopathic, B. Iatrogenic, C. Gall stones, D. Alcohol
D: Alcohol
Answer: D: Alcohol 
Explanation: Alcohol is MCC of chronic pancreatitis.