The electron structures of two ions made from elements $X$ and $Y$ are shown. Which equation shows the reaction between elements $X$ and $Y$?
- A$X_2 + 2Y \rightarrow 2X^{+} + 2Y^{-}$
- B$X_2 + 2Y \rightarrow 2X^{-} + 2Y^{+}$
- C$2X + Y_2 \rightarrow 2X^{+} + 2Y^{-}$
- D$2X + Y_2 \rightarrow 2X^{-} + 2Y^{+}$