Which of the following reactions would have a positive value for ∆S?(a) 3 NO(g) ==> NO2(g) + N2O(g)(b) 2 CO2(g) ==> 2 CO(g) + O2(g)(c) 2 I(g) ==> I2(g)(d) NH3(g) ==> NH3(l)(e) None of these reactions would have a positive ∆S.