This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
[{'content': 'Multifocal tumor of vascular origin in a patient of AIDS? \nSelect and explain. \nA. Kaposi sarcoma, B. Astrocytoma, C. Gastric Carcinoma, D. Primary CNS lymphoma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: kaposi sarcoma commonly seen in patient with AIDS REF:ANANTHANARAYANAN TEXT BOOK OF MICROBIOLOGY 9EDITION PGNO.576', 'role': 'assistant'}]