This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: parasitology, Subject name: Microbiology
Hydatid cyst is caused by 
Select and explain. 
A. Clonorchis sinensis, B. Wuchereria bancrofti, C. Echinococcus granulosus, D. Ascaris lumbricoides
C: Echinococcus granulosus
Answer: C: Echinococcus granulosus 
Explanation: Hydatid disease is caused by Echinococcus granulosus or dog tapeworm. The dog is the definitive host and man, sheep, pig, cattle, horse, and goat act as intermediate host. The disease is characterised by hydatid cyst which involves liver, lung, brain, hea, kidney, spleen, bone, muscle. Ref: Baveja textbook of microbiology; 4th edition.