What is the estimated incubation period of HIV infection



What is the estimated incubation period of HIV infection:
a. 4 weeks.
b. 6 months.
c. 3 years.
d. 6 years.
e. 10 years. ***
the absence of antiretroviral therapy, the median time of progression from     infection to AIDS is nine to ten years, and the median survival time after developing AIDS is only 9.2 months. However, the rate of clinical disease progression varies widely between individuals, from two weeks up to 20 years.