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: Medicine
[{'content': 'Which of the following can cause pulmonary eosinophilia? \nSelect and explain. \nA. Ascaria, B. Paragonismus westermanni, C. W. banrofti, D. All the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Inhaled or ingested extrinsic factors, including medications and infectious agents (eg, parasites, fungi, mycobacteria), may trigger an eosinophilic immune response. This may be mild and self-limited, as in Loeffler syndrome. Intrinsic pulmonary eosinophilic syndromes are generally idiopathic in nature. They include a diverse group of autoimmune and idiopathic syndromes ranging from blood dyscrasias to vasculitis. This group includes chronic eosinophilic pneumonia (CEP), idiopathic hypereosinophilic syndrome (IHES), Churg-Strauss syndrome (CSS), and eosinophilic granuloma (EG; pulmonary histiocytosis X or Langerhans cell granulomatosis).', 'role': 'assistant'}]