This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: JIPMER 2017, Subject name: Microbiology
[{'content': 'All of the following have operculated eggs except: \nSelect and explain. \nA. Clonorchis sinensi, B. Diphyllobothrium latum, C. Hymenolepis dimunita, D. Fasciola hepatics', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Operculated eggs are those eggs which have a lid or operculum.Operculated eggs are present in-1. Most of the Trematodes (except Schistosomes)2. Diphyllobothrium latum (Fish tapeworm)Diphyllobothrium latum causes Megaloblastic anemia.Eggs of H. dimunita (Rat tapeworm) lacks polar filaments. Clonorchis sinensi (Oriental Liver fluke) causes Cholangiocarcinoma.', 'role': 'assistant'}]