This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Misc., Subject name: Microbiology
[{'content': 'Hydatid disease is caused by one of the following \nSelect and explain. \nA. Taenia solium, B. Hymenolepis diminuta, C. Echinococcus granulosus, D. Dipylidium caninum', 'role': 'user'}, {'content': 'Answer: C \nExplanation: (C) Echinococcus granulosus # Echinococcus granulosus, the dog tapeworm or the hydatid worm (formerly called Taenia echinococcus), which has the dog as the definitive host and sheep and humans as the principal intermediate hosts.> In humans it causes unilocular echinococcosis or hydatid disease.', 'role': 'assistant'}]