Which of the following equations correctly represents the reaction of the burning of magnesium?

When a metal is burnt in the air, it reacts with oxygen to form oxides. In the given reaction, when magnesium is burnt in the air, it combines with air to form magnesium oxide, MgO.

The balanced reaction equation is as below,

$$\begin{gathered} 2{\mathrm{Mg}}_{\left(\mathrm{s}\right)} + {{\mathrm{O}}_2}_{\left(\mathrm{g}\right)} \to 2{\mathrm{MgO}}_{\left(\mathrm{s}\right)} \\ \mathrm{Magnesium} \mathrm{Oxygen} \mathrm{Magnesium} \mathrm{oxide} \end{gathered}$$

The equation given in this alternative correctly represents this reaction.