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: Microbiology
[{'content': 'It is true about H. Pylori that it - \nSelect and explain. \nA. Is gram -ve spiral organism, B. Is a protozoa, C. Causes chronic gastritis in adults due to reinfection, D. Treatment prevents gastric lymphoma', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Treatment prevent gastric lymphoma", 'role': 'assistant'}]