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': 'Treatment of choice in Choledochal cyst is \nSelect and explain. \nA. Roux-en-Y hepaticjejunostomy, B. Cystojejunostomy, C. Choledochoduodenostomy, D. Choledochojejunostomy', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Treatment of Choledochal cyst Type I : Roux-en-Y hepaticojejunostomy Type II: Excision with T-tube REPAIR, Roux-en-Y hepaticojejunostomy Type III: Endoscopic sphincterectomy and cyst unroofing Type IVA: Hepatic resection for localised disease, Liver transplantation for diffuse diseases Type IVB: Transduodenal sphicteroplasty and Roux-en-Y hepaticojejunostomy Type V: Hepatic resection for localised disease, Liver transplantation for diffuse disease Ref: Sabiston 20th edition Pgno :1511', 'role': 'assistant'}]