This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Anatomy
Malignant hydatidosis is caused by 
Select and explain. 
A. Echinococcus granulosus, B. Echinococcus multilocularis, C. Echinococcus vogelli, D. Echinococcus oligahus
B: Echinococcus multilocularis
Answer: B: Echinococcus multilocularis 
Explanation: .