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
[{'content': 'Bacillary angiomatosis is caused by \nSelect and explain. \nA. Bartonella henselae, B. Hansen’s bacillus, C. Koch’s bacillus, D. H. ducreyi', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Henselae causes bacillary angiomatosis, a condition resembling Kaposi’s sarcoma in patients with AIDS. The skin, lymph nodes or liver and spleen are primarily involved in this condition. The bacteria also cause sub acute bacterial endocarditis.', 'role': 'assistant'}]