Which one of the following statements is correct with respect to $AIDS$ ?

• A

  The $HIV$ can be transmitted through eating food together with an infected person

• B

  Drug addicts are least susceptible to $HIV$ infection

• C

  $AIDS$ patients are being fully cured cent per cent with proper care and nutrition

• D

  The causative $HIV$ retrovirus enters helper T­lymphocytes thus reducing their numbers.