This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Systemic Bacteriology (Gram Positive Bacilli, Gram Negative Bacilli), Subject name: Microbiology
[{'content': 'C. diphtheriae can be biochemically differentiated from C. pseudotuberculosis by \nSelect and explain. \nA. Catalase test, B. Urease test, C. Oxidase test, D. Tellurite Reduction', 'role': 'user'}, {'content': 'Answer: B \nExplanation: -C. pseudotuberculosis is urease positive and is thus differentiated from C. diphtheriae. - C. pseudotuberculosis causes caseous lymphadenitis in sheep and goats. Corynebacterium - catalase positive. Oxidase positive organisms are: Pseudomonas aeruginosa Burkholderia species Vibrio Pasteurella multocida Brucella Neisseria Haemophilus spp Campylobacter Potassium tellurite agar (PTA) is the selective media used for C. diphtheriae.', 'role': 'assistant'}]