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: Microbiology
[{'content': 'The definitive host for echinococcous granulosa is? \nSelect and explain. \nA. Man, B. Sheep, C. Hound, D. Dog', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Dog", 'role': 'assistant'}]