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: Pathology
Rapid progression of disease with full blown manifestation in AIDS occurs when T4 cell count falls bellow- 
Select and explain. 
A. 1000/microL, B. 500/microL, C. 200/microL, D. 50/microL
C: 200/microL
Answer: C: 200/microL 
Explanation: Rapid progression of disease with full-blown manifestation in AIDS occurs when CD4 T cell count falls below 200/µL.