In which of the following reactions, standard reaction entropy change (ΔS°) is positive and standard Gibbs's energy change (ΔG°) decreases sharply with increasing temperature?
A. Mg(s)+1/2O₂(g)⟶MgO(s)
B. 1/2C₍ᵣₐₚₕᵢₜₑ₎ +1/2O₂(g)⟶1/2CO₂(g)
C. C₍ᵣₐₚₕᵢₜₑ₎ +1/2O₂(g)⟶CO(g)
D. CO(g)+1/2O₂(g)⟶CO₂(g)
