This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Pathology
Hydatid cyst is caused by? 
Select and explain. 
A. Trypanosoma cruzi, B. Taenia solium, C. Taenia saginata, D. Echinococcus granulosus
D: Echinococcus granulosus
Answer: D: Echinococcus granulosus 
Explanation: Hydatid disease Caused by ingestion of eggs of echinococcal species. Definitive host is the dog Intermediate hosts are sheep