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: Medicine
[{'content': 'Most common complication of acute pancreatitis is - \nSelect and explain. \nA. Pancreatic abscess, B. Pseudocyst, C. Phlegmon, D. Pleural effusion', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]