已知：（1）Zn(s) + 1/2O₂(g) = ZnO(s) ΔH =" -350" kJ·mol^-1
（2）2Ag(s) + 1/2O₂(g) = Ag₂O(s) ΔH =" -25" kJ·mol^-1
则Zn(s) + Ag₂O(s) =" ZnO(s)" + 2Ag(s)的ΔH等于

A．-375 kJ·mol^-1	B．-325 kJ·mol^-1
C．+375 kJ·mol^-1	D．+325 kJ·mol^-1