Identify the correct statements regarding the presence of a $-NO_{2}$ group in a benzene ring:
$A$. It increases the electron density of the benzene ring.
$B$. It deactivates the benzene ring towards electrophilic aromatic substitution.
$C$. It activates the benzene ring towards nucleophilic aromatic substitution.
$D$. It directs the incoming electrophile to the ortho and para positions.

• A
  $B$ and $D$ Only
• B
  $C$ and $A$ Only
• C
  $A$ and $D$ Only
• D
  $B$ and $C$ Only