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': "Kaposi's sarcoma (KS) usually occurs when CD4+ lymphocyte counts are: \nSelect and explain. \nA. Above 600, B. Between 1000-2000, C. Below 200, D. Above 2000", 'role': 'user'}, {'content': 'Answer: C \nExplanation: When CD4 count falls less than 200/L, the patient develops full-blown AIDS. This stage is characterized by the development of HIV wasting syndrome with weight loss and diarrhea for 1 month.\nThe patients with AIDS show a marked susceptibility to the development of malignancies.\xa0\nHuman herpes virus-8–associated Kaposi’s sarcoma is the most noted malignancy associated with AIDS.\n\n\u200bParija SC. Textbook of Microbiology & Immunology. Elsevier Health Sciences; 2014. Page:571', 'role': 'assistant'}]