已知298K时,有Zn(s)+1/2O2(g)=ZnO(s),ΔrHmθ═-351.5kJ•mol-1,Hg(l)+1/2O2(g)=HgO(s),ΔrHmθ═-90.8kJ•mol-1,则反应Zn(s)+HgO(s)=Hg(l)+ZnO(s)的ΔrHmθ为()
A.442.3kJ•mol<sup>-1</sup>
B.260.7kJ•mol<sup>-1</sup>
C.–442.3kJ•mol<sup>-1</sup>
D.-260.7kJ•mol<sup>-1</sup>