This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Medicine
[{'content': 'Causes of pulmonary-renal syndrome - \nSelect and explain. \nA. Leptospirosis, B. Hanta virus, C. Paraquat poisoning, D. All', 'role': 'user'}, {'content': "Answer: D \nExplanation: The pulmonary renal syndrome is a dramatic presentation with renal and respiratory failure that is not explained by excess intravascular fluid or by severe pneumonia;it occurs in Good pasture' s disease(anti-GBM) and small-vessel vasculitis.Other causes include leptospirosis leading to Weil's disease,Hanta hemorrhagic fever and poisoning with the herbicide paraquat. Ref:Davidson's medicine-22nd edition,page no:519.", 'role': 'assistant'}]