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
[{'content': 'Which of the following are false diverticulae \nSelect and explain. \nA. Zenker diverticulum, B. Epiphrenic diverticulum, C. Both of the above, D. None of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: There is only mucosal herniation in both of them.', 'role': 'assistant'}]