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 in - \nSelect and explain. \nA. Rectal prolapse, B. Esophagealachalasia, C. CAoesophagus, D. Zenker's diverticulum", 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Zenker's diverticulum o Endoscopic Zenker's diverticulectomy is aka Dolmann's procedure.", 'role': 'assistant'}]