This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
[{'content': 'Reservoir of Baonella angiomatosis - \nSelect and explain. \nA. Cats, B. Dogs, C. Cattle, D. Pigs', 'role': 'user'}, {'content': 'Answer: A \nExplanation: <p> Bacillary angiomatosis is an HIV associated disease caused by B.quintana or henselae. Reservoir is cat. Reference:Ananthanarayan &Paniker&;s textbook of Microbiology,9th edition,page no:413. <\\p>', 'role': 'assistant'}]