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': 'Burning epigastric pain is due to - \nSelect and explain. \nA. Vomiting, B. Reflux esophagitis, C. Duodenal ulcer, D. Gastric ulcer', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Reflux esophagitis", 'role': 'assistant'}]