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': 'Atypical pneumonia can be caused by the following microbial agents except - \nSelect and explain. \nA. Mycoplasma, B. Legionella pneumophila, C. Human corona virus, D. Klebsiella pneumoniae', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]