This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: mycology, Subject name: Microbiology
[{'content': 'Pathogenic cryptococci differ from non pathogenic strains by all of the following criteria except \nSelect and explain. \nA. Grow at 37 o C, B. Produces urease, C. Pathogenic for mice, D. Ferments carbohydrates', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Differentiation of pathogenic Cryptococcus from other non-pathogenic cryptococci is they grow at 37C, hydrolyse urea, produced brown colonies on niger seed agar and produce disease in mice. Ref: Textbook of Microbiology, Ananthanarayan and Paniker; 9th edition', 'role': 'assistant'}]