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': "True about Todani's modification of Alonso-Lej classification include the following except \nSelect and explain. \nA. TypeI - Saccular dilation of common bile duct, B. Type II - Diveiculum of Supra duodenal bile duct, C. Type IVA--Choledochocele, D. Type IVB- Multiple Saccular dilation of extrahepatic ducts only", 'role': 'user'}, {'content': "Answer: C \nExplanation: Todani Modification of Alonso-Lej classification Type I - Dilation of extrahepatic biliary tree Type Ia- cystic dilation Type Ib - focal segmental dilation Type Ic- fusiform dilation Type II - Diveicular dilation of extrahepatic biliary tree Type III - Cystic dilation of intra duodenal poion of common bile ducts (choledochocele) Type IVA- Dilation of the extrahepatic and intrahepatic biliary tree Type IVB- Dilation of multiple secretion of extrahepatic bile ducts Type V - Dilation confined to intrahepatic bile ducts (caroli's disease) Type VI - Cystic dilation of cystic duct (not included in Todani's modification) Ref: Sabiston 20th edition Pgno :1510-1511", 'role': 'assistant'}]