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
Peptic oesophagitis- 
Select and explain. 
A. Is effectively demonsted by barium swallow, B. Is always associated with hiatus hernia, C. Can be readily confirmed by oesophagoscopy, D. None
D: None
Answer: D: None 
Explanation: Ans. is 'None'