This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Surgery
[{'content': 'H. pylori causes \nSelect and explain. \nA. Type A Gastritis b, B. Type B gastritis, C. Autoimmune, D. Allergic Gastritis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: .', 'role': 'assistant'}]