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': 'Peptic oesophagitis- \nSelect and explain. \nA. Is effectively demonsted by barium swallow, B. Is always associated with hiatus hernia, C. Can be readily confirmed by oesophagoscopy, D. None', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'None'", 'role': 'assistant'}]