At 700 K, the Equilibrium Constant for the Reaction CO(g) $\leftrightharpoons$

Multiple Choice

At 700 K, the equilibrium constant for the reaction CO(g) + H₂O(g) $\leftrightharpoons$ CO₂(g) + H₂(g) is 5.10. What is $\Delta$ G ^$\circ$ for this reaction at this temperature

A) -9.08 kJ/mol
B) -9.28 kJ/mol
C) -9.48 kJ/mol
D) -9.68 kJ/mol
E) None of the above