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': "All are true about Zenker's Diverticulum except \nSelect and explain. \nA. Dohlman's produces used, B. Is a false diverticulum, C. Outpouching of Anterior pharyngeal wall, D. Boyce sign", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Is outpouching of posterior\xa0pharyngeal wall.', 'role': 'assistant'}]