Using $\Delta_{f} G_{298}^{\circ}$ Data Given Below Calculate the Standard Gibbs Energy Change

Multiple Choice

Using $\Delta_{f} G_{298}^{\circ}$ data given below:
$\begin{array}{|c|c|c|c|}\hline & \mathrm{CO}_{2}(\mathrm{~g}) & \mathrm{CH}_{4}(\mathrm{~g}) & \mathrm{CH}_{3} \mathrm{CO}_{2} \mathrm{H}(\mathrm{l}) \\\hline \Delta_{\mathrm{f}} G_{298}^{\circ} / \mathrm{kJ} \mathrm{mol}^{-1} & -394.4 & -50.8 & -389.9 \\\hline\end{array}$ calculate the standard Gibbs energy change, $\Delta _{T}G_{298}^{\circ}$ (kJ mol^-1) , for the following reaction:
CO₂ (g) + CH₄ (g) → CH₃CO₂H (l)

A) - 835.1
B) - 55.3.
C) + 835.1.
D) + 55.3.