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: Radiology
[{'content': '"Chain of lakes appearance" On ERCP is seen in \nSelect and explain. \nA. Acute pancreatitis, B. Chronic pancreatitis, C. Pancreatic adenocarcinoma, D. Crohn\'s disease', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Beaded appearance due to alternating dilatation and stenosis\xa0→ Chain of lakes appearance or string of pearl appearance seen in chronic pancreatitis.', 'role': 'assistant'}]