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 $C$.
- A$A-$Retrovirus,$B-$Viral $DNA$ is produced,$C-$New viral $RNA$ is produced by the infected cell
- B$A-$Transcriptase,$B-$Bacterial $RNA$ is produced,$C-$New viral $DNA$ is produced by the infected cell
- C$A-$Reverse transcriptase,$B-$Viral $DNA$ is produced,$C-$New viral $RNA$ is produced by the infected cell
- D$A-$Reverse transcriptase,$B-$Bacterial $RNA$ is produced,$C-$New viral $DNA$ is produced by the infected cell
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$(1)$ After entering the individual's body,the $HIV$ virus enters macrophages,where the viral $RNA$ genome replicates into viral $DNA$ with the help of the reverse transcriptase enzyme.
$(2)$ $HIV$ enters helper $T$-lymphocytes.
$(3)$ $HIV$ has an $RNA$ molecule as its genetic material.
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$(5)$ Viral $DNA$ is incorporated into the host cell's $DNA$.
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