Sulfur Can Be Separated from Lead in the Mineral Galena $\rarr$

Multiple Choice

Sulfur can be separated from lead in the mineral galena, PbS(s) , by "roasting" the ore in the presence of oxygen as shown in the following reaction:
2PbS(s) + 3O₂(g) $\rarr$ 2PbO(s) + 2SO₂(g)
Calculate $\Delta$ S° for this reaction using the thermodynamic data provided below.

A) -410 J/K·mol
B) -161.5 J/K·mol
C) -47.7 J/K·mol
D) 21.8 J/K·mol
E) 43.5 J/K·mol