Consider the general reaction given below at $400 \ K$: $xA_{(g)} \rightleftharpoons yB_{(g)}$. The values of $K_p$ and $K_c$ are studied under the same condition of temperature but variation in $x$ and $y$. $(i)$ $K_p = 85.87$ and $K_c = 2.586$ (appropriate units). $(ii)$ $K_p = 0.862$ and $K_c = 28.62$ (appropriate units). The values of $x$ and $y$ in $(i)$ and $(ii)$ respectively are:

• A
  $(i) \ x=1, y=2; (ii) \ x=2, y=1$
• B
  $(i) \ x=1, y=3; (ii) \ x=3, y=1$
• C
  $(i) \ x=2, y=1; (ii) \ x=1, y=2$
• D
  $(i) \ x=3, y=1; (ii) \ x=1, y=3$