Tungsten is obtained commercially by the reduction of ${\mathrm{WO}}_3$ with ${\mathrm{H}}_2$ according to the equation

${\mathrm{WO}}_3\left(s\right)+3{\mathrm{H}}_2\left(g\right)⟶\mathrm{W}\left(s\right)+3{\mathrm{H}}_2\mathrm{O}\left(g\right)$

The following data related to this reaction at 25° C are available.

                          ${\mathrm{WO}}_3\left(s\right){\mathrm{H}}_2\mathrm{O}\left(g\right)$

$\begin{array}{ccc}\mathrm{\Delta }{H}^{\circ }\mathrm{kJ}/\mathrm{mol}& -840.3& -241.8\\ \mathrm{\Delta }{G}^{\circ }\mathrm{kJ}/\mathrm{mol}& -763.5& -228.5\end{array}$

The temperature at which this reaction is at equilibrium at 1 $\mathrm{atm}$ is closest to which of the following?