$AIDS$ is caused by which of the following?

$A$ doctor while operating on an $HIV$ positive patient accidentally cuts himself with a scalpel. In order to confirm whether he has contracted the virus,which of the following tests should be performed?

In which cells does $HIV$ enter,replicate,and produce progeny viruses?

Which of the following is commonly used nowadays for the detection of $HIV$ in a potential $AIDS$ patient?

Which of the following is $NOT$ a symptom of $ARC$ ($AIDS$-Related Complex)?

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