The correct option is A True
Viruses generally lack the ability to replicate by themselves, outside a host cell, therefore HIV attack the macrophages in the body and replicate within them and get released without disintegrating the macrophages. Then released viruses attack the T helper cell . They replicate inside the cell and are released by disintegrating the cells. Many years after the infection sets in the infected TH cells start dying more quickly than they can be replaced thus immunity is severely compromised.