This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Unknown
Adult worm of Echinococcus is found in: 
Select and explain. 
A. Dog, B. Humans, C. Domestic animals, D. Felines
A: Dog
Answer: A: Dog 
Explanation: Ref. Textbook of Microbiology and Immunology BY Parija. – Compiled from Various chapters