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': 'What is true about H. pylori- \nSelect and explain. \nA. Gram -ye Cocci curved, B. Gram +ve Cocci straight, C. Gram +ve bacilli curved, D. Gram -ye spiral bacteria', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Gram -ye spiral bacteria", 'role': 'assistant'}]