Which virus directly attacks macrophages?

What is the full form of $AIDS$?

Which of the following is correct regarding $AIDS$ causative agent $HIV$?

Identify the correct sequence for the mechanism of $HIV$ infection:
$1.$ Viral $RNA$ replicates to form viral $DNA$ with the help of reverse transcriptase.
$2.$ The progeny viruses released in the blood attack other $T_H$ cells and destroy them.
$3.$ Viral $DNA$ gets incorporated into the host cell's $DNA$ and produces virus particles.
$4.$ Virus enters into macrophages.

In which year was the first case of $AIDS$ infection reported in India?

Into how many categories can individuals infected with $HIV$ be classified?