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': 'Intermediate host for hydatid disease: \nSelect and explain. \nA. Man, B. Dog, C. Cat, D. Foxes', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Man', 'role': 'assistant'}]