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': 'Mycobacterial species differentiated by all except \nSelect and explain. \nA. Catalase test, B. Amidase, C. Niacin, D. Oxidase', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Oxidase", 'role': 'assistant'}]