$HIV$ attacks which of the following cells?

During the replication of a retrovirus,what is introduced into the host cell?

The replication of a retrovirus is shown below. Which enzyme is responsible for the process labeled $P$?

Which of the following statements is $NOT$ correct for $AIDS$?

What is the nucleic acid present in $HIV$?

Arrange the following statements regarding $AIDS$ in the correct chronological order of the infection process:
$(1)$ 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.
$(4)$ Newly formed viruses are released into the blood and attack other helper $T$-lymphocytes.
$(5)$ Viral $DNA$ is incorporated into the host cell's $DNA$.