This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Oesophagus, Subject name: Surgery
[{'content': "Dohlman's operation done for: \nSelect and explain. \nA. Achalasia, B. Rectal prolapse, C. Ca esophagus, D. Zenker's diverticulum", 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. (d) Zenker's diverticulumRef Shackelford 7th Edition, Page 345* Surgical Management of Choice is - Cricopharyngeal Myotomy with Diverticulectomy (If given in choices is the best option)* Dohlman's operation - Endoscopic stapling technique preferred for Diverticulum more than 3cm Size.", 'role': 'assistant'}]