Calculate ΔHo for the reaction :Na2O + SO3 → Na2SO4 given the following :A) Na(s) + H2O(l)  → NaOH(s) + 1/2 H2(g) ; ΔHo = – 146 kJB) Na2SO4(s) +H2O → 2NaOH(s) + SO3(g) ; ΔHo = + 418 kJC) 2 Na2O(s) + 2H2(g) → 4Na(s) + 2H2O(l); ΔHo = + 259 kJ