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': 'Fish acts as intermediate host in -a) D. latumb) Clonorchis sinensisc) H. Diminutad) H. Nana \nSelect and explain. \nA. ac, B. ab, C. ad, D. bc', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Fish acts as intermediate host: Diphyllobothrium latum, Clonorchis sinensis, Paragonimus westermani (Crab fish),\xa0Metagonimus spp., Heterophyes heterophyes\nIn case of H. nana Human, rat and mouse acts as both definitive and intermediate host, no intermediate host.\nIn case of H. diminuta: Flea acts as intermediate host.', 'role': 'assistant'}]