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': "An elderly male present with history of dysphagia, regurgitation, foul breath and cough. Bilateral lung crepitations are noted on examination. The most likely diagnosis is: \nSelect and explain. \nA. Schatzki's ring, B. Zenker's diverticulum, C. Corkscrew esophagus, D. Plummer-Vinson syndrome", 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. (b) Zenker's diverticulumRef: Sabiston 20th Edition, Pages 1020 -1022* Most common complication of Zenker's Diverticulum - Lung abscess due to aspiration* Most common symptom: Dysphagia (Not Halitosis)", 'role': 'assistant'}]