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 procedure is used for: \nSelect and explain. \nA. Rectal prolapse, B. Esophageal achalasia, C. Cancer oesophagus, D. Zenker's diverticulum", 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. (d) Zenker's diverticulumRef: Sabiton 20th Edition, Page 1019* Dohlman Endoscopic stapling procedure is indicated for diverticulum >3cm size", 'role': 'assistant'}]