In the given flow diagram, the replication of retrovirus in a host is shown. Observe and answer the following questions.

$(a)$ Fill in $(A)$ and $(B)$

$(b)$ Why is the virus called retrovirus ?

$(c)$ Can the infected cell survive while viruses are being replicated and released ?

$(a)$ $(A)$ : Viral $DNA$ is produced by reverse transcriptase. $(B)$: New viral RNA is produced by infected cell.

$(b)$ $HIV$ is called retrovirus because it forms $DNA$ from $RNA$ by reverse transcription.

$(c)$ Yes, infected cell can survive while viruses are being replicated and released.