World $AIDS$ Day is observed on:

In the given flow chart,the replication of a retrovirus in a host cell is shown. Observe it carefully and fill in the blanks $A, B$,and $C$.

In macrophages,the viral genome replicates into $DNA$ with the help of which enzyme?

After being released into the blood,$HIV$ attacks which cells?

Which enzyme synthesizes $DNA$ from $RNA$ in $HIV$?

In an $HIV$ infected person,the $HIV$ produced in macrophages enters which cells to replicate and produce its progeny?