"Which formula equation represents the burning of sulfur to produce sulfur dioxide?

a. S(s) + O₂(g) → ASO₂(g)

b. 2H₂S(s) + 3O₂(g) → 2H₂O(l) +2SO₂(g)

c. 4FeS₂ + 11O₂ → 2Fe₂O³ + 8SO₂

d. V2O⁵ + 2O₂(g) → 2SO³(g)