Statement $P$: $HIV$ contains a $DNA$ molecule as its genetic material.
Statement $Q$: $AIDS$ is a fatal deficiency disease caused by immune system impairment.

• A
  Statement $P$ and Statement $Q$ are correct.
• B
  Statement $P$ and Statement $Q$ are both incorrect.
• C
  Statement $P$ is correct and Statement $Q$ is incorrect.
• D
  Statement $P$ is incorrect and Statement $Q$ is correct.