This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Commonest complication of Zenker's diveiculum is 
Select and explain. 
A. Dysphonia, B. Gastroesophageal reflux, C. Lung abscess, D. Perforation
C: Lung abscess
Answer: C: Lung abscess 
Explanation: Ans is 'c' ie Lung abscess "Pulmonary infection is the most frequent serious complication, and many patients are first seen after experiencing repeated episodes of pneumonia. "-CSDT Aspiration pneumonia & Lung abscess are the most frequent complications of Zenker's diveiculum. Other rare complications are: Perforation Bleeding Carcinoma