If first ionization enthalpies of element $X$ and $Y$ are $419 \ kJ \ mol^{-1}$ and $590 \ kJ \ mol^{-1}$,respectively and second ionization enthalpies of $X$ and $Y$ are $3069 \ kJ \ mol^{-1}$ and $1145 \ kJ \ mol^{-1}$,respectively. Then the correct statement is :-

• A
  $X$ is an alkali metal and $Y$ is an alkaline earth metal.
• B
  $X$ is an alkaline earth metal and $Y$ is an alkali metal.
• C
  Both $X$ and $Y$ are alkali metals.
• D
  Both $X$ and $Y$ are alkaline earth metals.