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: Surgery
[{'content': 'Commonest malignancy in HIV patient ? \nSelect and explain. \nA. Kaposi sarcoma, B. Adenoma of stomach, C. Astrocytoma, D. CNS lymphoma', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans is 'a' ie. Kaposi Sarcoma Neoplastic ds seen in AIDS a) Kaposi Sarcoma (MC)* d) Multiple Myeloma b) Non-Hodgkins lymphoma (2nd MC)* e) Melanoma c) Hodgkins lymphoma f) Cervical, brain, testicular, oral cancers", 'role': 'assistant'}]