The common causative agents of echinococcosis （）
A.Metacestode of Echinococcus multilocularis
B.Cysticercus tenuicollis
C.Metacestode of Echinococcus granulosus
D.Cysticercus pisiformis
正确答案：Metacestode of Echinococcus multilocularis；Metacestode of Echinococcus granulosus