In the reaction sequence,
$X$ and $Y$ are,respectively

• A
  $p$-bromoacetanilide and $p$-bromoaniline
• B
  $2,4,6$-tribromoacetanilide and $2,4,6$-tribromoaniline
• C
  $o$-bromoacetanilide and $o$-bromoaniline
• D
  $2,6$-dibromoacetanilide and $2,6$-dibromoaniline