This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pancreas, Subject name: Surgery
[{'content': 'TIGAR-O classification is for:- \nSelect and explain. \nA. Acute pancreatitis, B. Chronic pancreatitis, C. Pancreatic cancer, D. Pancreatic injuries', 'role': 'user'}, {'content': 'Answer: B \nExplanation: TIGAR-O Classification of Etiology of Chronic Pancreatitis * T - Toxic - Metabolic I - Idiopathic G - Genetic A - Auto Immune R - Recurrent severe O - Obstructive', 'role': 'assistant'}]