This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Mycology, Subject name: Microbiology
What is true about Echinococcus Granulosus? 
Select and explain. 
A. Definitive host in humans, B. Accidental intermediate host in humans, C. Intermediate host in dogs, D. Definitive host in snails
B: Accidental intermediate host in humans
Answer: B: Accidental intermediate host in humans 
Explanation: Ref: Textbook of surgical gastroenterology pg. 767, PK mission ed 2016Human echinococcosis is a zoonotic disease that is caused by parasites, namely tapeworms of the genus Echinococcus.Transmission* E. granulosus requires two host types, a definitive host and an intermediate host.* The definitive host of this parasite are dogs* Intermediate host are most commonly sheep, however, cattle, horses, pigs, goats, and camels are also potential intermediate hosts.* Humans can also be an intermediate host for E. granulosus, however this is uncommon and therefore humans are considered an accidental intermediate host.