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
The "window period" in HIV infection means: 
Select and explain. 
A. The time Lapse between the infection and detection of viral antibodies, B. The time lapse between the infection and development of AIDS, C. The time lapse between obtaining the sample and detection of virus in the lab, D. None of the above
A: The time Lapse between the infection and detection of viral antibodies
Answer: A: The time Lapse between the infection and detection of viral antibodies 
Explanation: None