For the reaction $X_{2(g)} + Y_{2(g)} \rightleftharpoons 2XY_{(g)}$,the reaction is studied at a fixed temperature. Initially,$1 \ mol$ of $X_2$ is taken in a $1 \ L$ flask and $2 \ mol$ of $Y_2$ is taken in a $2 \ L$ flask. If the flasks are connected,what are the equilibrium concentrations of $X_2$ and $Y_2$? (Given: Equilibrium concentration of $XY = 0.6 \ mol/L$)

• A
  $(\frac{1}{3} - 0.3), (\frac{2}{3} - 0.3)$
• B
  $(\frac{1}{3} - 0.6), (\frac{2}{3} - 0.6)$
• C
  $(1 - 0.3), (2 - 0.3)$
• D
  $(1 - 0.6), (2 - 0.6)$