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
[{'content': 'Feature of chronic pancreatitis with respect to pancreatic cancer are all except \nSelect and explain. \nA. Calcification, B. Duct penetrating sign, C. Duct/gland width ratio <0.5, D. Dilation of bile and pancreatic duct', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Irregularity of the pancreatic duct, intraductal or parenchymal calcifications, diffuse pancreatic involvement, and normal or smoothly stenotic pancreatic duct penetrating through the mass(duct penetrating sign) or the diagnosis of chronic pancreatitis over cancer Ref: Sabiston 20th edition Pgno :1533', 'role': 'assistant'}]