This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gallbladder, Subject name: Surgery
[{'content': "Preferred treatment for type III Mirizzi's syndrome is: \nSelect and explain. \nA. Paial cholecystectomy, B. Paial cholecystectomy with choledochoplasty, C. Total cholecystectomy, D. Bilioenteric anastomosis", 'role': 'user'}, {'content': "Answer: B \nExplanation: Mirizzi's syndrome / functional hepatic syndrome: external compression of common hepatic duct by inflammatory tissue in the pericholecystic region; formation of cholecystocholedochal fistula. Types Treatment Type I Paial cholecystectomy Type II & III Paial cholecystectomy (choledochoplasty) + T- tube drainage Type IV & V Bilioenteric anastomosis.", 'role': 'assistant'}]