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: Pathology
[{'content': "All of the following are seen in legionnaire's disease except: September 2009 \nSelect and explain. \nA. Fever, B. Mental confusion, C. Diarrhoea, D. Unilateral pneumonitis", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. D: Unilateral pneumonitis', 'role': 'assistant'}]