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
Fish acts as intermediate host in -a) D. latumb) Clonorchis sinensisc) H. Diminutad) H. Nana 
Select and explain. 
A. ac, B. ab, C. ad, D. bc
B: ab
Answer: B: ab 
Explanation: Fish acts as intermediate host: Diphyllobothrium latum, Clonorchis sinensis, Paragonimus westermani (Crab fish), Metagonimus spp., Heterophyes heterophyes
In case of H. nana Human, rat and mouse acts as both definitive and intermediate host, no intermediate host.
In case of H. diminuta: Flea acts as intermediate host.