In India,the $HIV$ virus was first reported in:

In which of the following situations is $AIDS$ $NOT$ transmitted?

$HIV$ causes a reduction in which of the following?

The cause of $AIDS$ is ..........

In which country was $AIDS$ first detected?

$A$: Vaccine against $AIDS$ has not been made in spite of repeated attempts.
$R$: $HIV$ has the ability to mutate to form several subtypes.