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: Surgery
[{'content': 'Commonest complication of Zenker&;s diveiculum is \nSelect and explain. \nA. Dysphonia, B. Gastroesophageal reflux, C. Lung abscess, D. Perforation', 'role': 'user'}, {'content': "Answer: C \nExplanation: Commonest complications are lung abcess and pneumonia. It occurs because of Regurgitation during night while turning neck. Othercomplications are abscess in the neck due to infection in the pouch, Carcinoma, Weight loss and cachexia. Reference: SRB's Manual of Surgery, 6th Edition, page no=422", 'role': 'assistant'}]