Use Hess's Law to Calculate Δ_rG° using the Following Information

Use Hess's law to calculate Δ_rG° using the following information: ClO(g) + O₃(g) → Cl(g) + 2O₂(g) Δ_rG° = ?
2O₃(g) → 3O₂(g) Δ_rG° = +489.6 kJ mol^-1
Cl(g) + O₃(g) → ClO(g) + O₂(g) Δ_rG° = -34.5 kJ mol^-1

A) -472.4 kJ mol^-1
B) -210.3 kJ mol^-1
C) +455.1 kJ mol^-1
D) +262.1 kJ mol^-1
E) +524.1 kJ mol^-1