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': "Loeffler's syndrome occurs in all except - \nSelect and explain. \nA. Toxocara, B. Strongyloides, C. Ascaris, D. Giardia", 'role': 'user'}, {'content': "Answer: D \nExplanation: Loeffler's syndrome was originally reported as a benign, acute eosinophilic pneumonia of unknown cause characterized by migrating pulmonary infiltrates and minimal clinical manifestations.\nIt may be secondary to parasites or drugs.\nParasite causing Loeffler's syndrome:\n\n- Ascaris\n- Toxocara\n- Ancylostoma duodenale\n- Nectar americans\n- Paragonimus westermani\n- Strongyloides stercoralis\n- Echinococcus granulosus", 'role': 'assistant'}]