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 of pancreatitis is 
Select and explain. 
A. Idiopathic, B. Iatrogenic, C. Gall stones, D. Alcohol
C: Gall stones
Answer: C: Gall stones 
Explanation: MCC of pancreatitis is gallstones.
2nd MCC of pancreatitis is Alcohol.