This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteriology, Subject name: Microbiology
[{'content': 'Proteus mirabilis is associated with which renal calculi? \nSelect and explain. \nA. Uric acid, B. Struvite, C. Cysteine, D. Calcium Oxalate', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Proteus mirabilis/Proteus vulgarisGram-negative rods, non-lactose fermenting* Highly motile; "swarming" motility on the surface of blood agar* Urease produced* Facultative anaerobe (Enterobacteriaceae), oxidase negativePathogenesis* Urease raises urine pH to cause kidney stones (staghorn renal calculi)Ref: Ananthanarayan; 7th edition; Page no: 283', 'role': 'assistant'}]