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
Hydatid disease is caused by one of the following 
Select and explain. 
A. Taenia solium, B. Hymenolepis diminuta, C. Echinococcus granulosus, D. Dipylidium caninum
C: Echinococcus granulosus
Answer: C: Echinococcus granulosus 
Explanation: (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.