What is the meaning of $DNAs$ and $DNAase$?

• A
  $DNAs$ - Plural of $DNA$ molecule
  $DNAase$ - Enzyme that joins $DNA$
• B
  $DNAs$ - Enzyme that breaks $DNA$
  $DNAase$ - Plural of $DNA$ molecule
• C
  $DNAs$ - Plural of $DNA$ molecule
  $DNAase$ - Enzyme that breaks $DNA$
• D
  $DNAs$ - $DNA$ replication
  $DNAase$ - Enzyme that joins $DNA$