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': 'Maximum urease +ve is produced by - \nSelect and explain. \nA. H. pylori, B. P. mirabilis, C. K. rhinomatis, D. Ureaplasma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]