Select the correct statement about the hydrolysis of $BCl_3$ and $NCl_3$.

• A
  $NCl_3$ is hydrolysed and gives $HOCl$ but $BCl_3$ is not hydrolysed.
• B
  Both $NCl_3$ and $BCl_3$ on hydrolysis give $HCl$.
• C
  $NCl_3$ on hydrolysis gives $HOCl$ but $BCl_3$ gives $HCl$.
• D
  Both $NCl_3$ and $BCl_3$ on hydrolysis give $HOCl$.