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': 'All of the following statements about Zenker&;s diveiculum are true Except \nSelect and explain. \nA. Acquired diveiculum, B. Lateral X-rays on Barium swallow are often diagnostic, C. False diveiculum, D. Out pouching of the anterior pharyngeal wall, just above the cricopharyngeus muscle', 'role': 'user'}, {'content': "Answer: D \nExplanation: It is a protrusion of mucosa through Killian's dehiscence, a weak area of posterior pharyngeal wall between thyropharyngeus (oblique fibres) and cricopharyngeus(transverse fibres) of the inferior constrictor muscle of pharynx. Barium swallow-lateral view shows pharyngeal pouch. It is a false diveiculum because it contains only mucosa and submucosa. True diveiculum contains all 4 layers. It is usually an Acquired condition. Reference: SRB's Manual of Surgery, 6th Edition, page no=421.", 'role': 'assistant'}]