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
Which of the following is the cause of recurrent
pancreatitis? 
Select and explain. 
A. Gall stones, B. Pancreatic divisum, C. Pancreatic Ca., D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: Causes for recurrent pancreatitis are