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': 'Complications of "reflux esophagitis" \nSelect and explain. \nA. Stricture, B. Schatzki\'s ring, C. Barrett\'s esophagus, D. All of above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]