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: ENT
[{'content': "Ali of the following are true about Zenker's diveiculum except: \nSelect and explain. \nA. It is an acquired condition, B. It is a false diveiculum, C. Barium swallow, lateral view is the investigation of choice, D. Out pouching of anterior pharyngeal wall above cricopharyngeus muscles", 'role': 'user'}, {'content': "Answer: D \nExplanation: Zenker's diveiculum is an acquired posterior pharyngeal pulsion diveiculum in which only the mucosa and submucosa herniate through the Killian's dehiscence. It is a false diveiculum. IOC is barium study.", 'role': 'assistant'}]