This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pathophysiology - Acute Pancreatitis, Subject name: Surgery
All of the following are causes of acute pancreatitis except - 
Select and explain. 
A. Mumps, B. Gall stones, C. Trauma, D. Hypocalcemia
D: Hypocalcemia
Answer: D: Hypocalcemia 
Explanation: Ans. is 'd'. Reference- Harrison's Principles of Internal Medicine (19th Ed)