This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Anatomy
Most common cause of chronic pancreatitis is 
Select and explain. 
A. Alcohol, B. Gallstones, C. Tropical pancreatitis, D. ERCP
A: Alcohol
Answer: A: Alcohol 
Explanation: Etiology of Chronic Pancreatitis Heavy alcohol consumption is most common cause of CP (70-80%) Smoking increases the risk of alcohol induced CP Other causes : Chronic duct obstruction, trauma, pancreas divisum, cystic dystrophy of the duodenal wall, Hyperparathyroidism, hyperiglyceridemia, autoimmune pancreatitis, tropical pancreatitis&hereditary pancreatitis (accounts for <10 %of all cases) Ref:Sabiston 20th edition Pgno :1531