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': 'Mean transformation time for HIV to AIDS is: \nSelect and explain. \nA. 7.5 years, B. 10 years, C. 15 years, D. 12 years', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ref. Textbook of Microbiology and Immunology BY Parija. Page. 580\n\xa0\nThis is a straight forward question. Answer 10 years\nLines from WHO\n\nThe length of time can vary widely between individuals. Left without treatment, the majority of people infected with HIV will develop signs of HIV-related illness within 5–10 years, although this can be shorter.\nThe time between acquiring HIV and an AIDS diagnosis is usually between 10–15 years\nDefinitions of Long Term Non-Progressors, individuals were considered to be long-term nonprogressors if they had been infected with HIV for a long period (≥10 years), their CD4+ T cell counts were in the normal range, and they remained stable over years without receiving cART.', 'role': 'assistant'}]