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': 'Gold standard test for investigation for chronic Pancreatitis detection of early pathologies and simultaneous treatment possible (e.g., duct dilation, stent inseion) Ductal stones, seen as filling defects "Chain of lakes" or "string of pearls" appearance (characteristic feature) Irregularity, dilation of the main pancreatic duct \nSelect and explain. \nA. MRI, B. ERCP, C. Pancreatic function tests, D. Fecal fat estimation', 'role': 'user'}, {'content': 'Answer: B \nExplanation: ERCP - Considered the gold standard for the diagnosis of CP, the advent of secretion MRCP and EUS have significantly decreased its role as a diagnostic test ERCP : detection of early pathologies and simultaneous treatment possible (e.g., duct dilation, stent inseion) Ductal stones, seen as filling defects"Chain of lakes" or "string of pearls" appearance (characteristic feature)Irregularity, dilation of the main pancreatic duct Ref: Sabiston 20th edition Pgno :1535', 'role': 'assistant'}]