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': 'All are true regarding pseudomonas aeruginosa, except: \nSelect and explain. \nA. Oxidase positive, B. Polar flagellate, C. Ferments glucose forming acid and gas, D. Obligate aerobes', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ferments glucose forming acid and gas', 'role': 'assistant'}]