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: Physiology
The most common cause of Pancreatitis is 
Select and explain. 
A. Alcohol consumption, B. Blockage of papilla of Vater by gall stone, C. Consumption of food rich in trans fatty acids, D. None of the above
A: Alcohol consumption
Answer: A: Alcohol consumption 
Explanation: The most common cause of pancreatitis is drinking excess alcohol, and the second most common cause is blockage of the papilla of Vater by a gallstone; the two together account for more than 90 percent of all cases.