Use Hess's Law to Calculate ΔG°_rxn Using the Following Information

Use Hess's law to calculate ΔG°_rxn using the following information. ClO(g) + O₃(g) → Cl(g) + 2 O₂(g) ΔG°_rxn = ?
2 O₃(g) → 3 O₂(g) ΔG°_rxn = +489.6 kJ
Cl(g) + O₃(g) → ClO(g) + O₂(g) ΔG°_rxn = -34.5 kJ

A) -472.4 kJ
B) +210.3 kJ
C) -524.1 kJ
D) -262.1 kJ
E) +524.1 kJ