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': 'Tap water scotochromogen is \nSelect and explain. \nA. Mycobacterium chelonae, B. Mycobacterium marinum, C. Mycobacterium kanasaii, D. Mycobacterium gordonae', 'role': 'user'}, {'content': "Answer: D \nExplanation: M.gordonae often found in tap water (hence called 'the tap water scotochromogen'), is a common contaminant in clinical specimens and a rare cause of pulmonary disease. It differs from scrofulaceum in failing to hydrolyse urea, nicotinamide and pyrazinamide. Ref: Textbook of microbiology; Ananthanarayan and paniker's; 10th edition; Pg: 367", 'role': 'assistant'}]