Hydrolysis of 1 M Glucose 6-Phosphate Catalyzed by Glucose 6-Phosphatase $\Delta$

Hydrolysis of 1 M glucose 6-phosphate catalyzed by glucose 6-phosphatase is 99% complete at equilibrium (i.e., only 1% of the substrate remains) . Which statement is MOST nearly correct? (R = 8.315 J/mol · K; T = 298 K)

A) $\Delta$ G'° is -11 kJ/mol.
B) $\Delta$ G'° is -5 kJ/mol.
C) $\Delta$ G'° is 0 kJ/mol.
D) $\Delta$ G'° is +11 kJ/mol.
E) $\Delta$ G'° cannot be determined from the information given.