下列电离方程式，书写正确的是（　　）

A．Al₂（SO₄）₃=2Al³⁺+3SO₄^2-

B．AlCl₃=Al³⁺+3Cl^-

C．Mg（NO₃）₂=Mg⁺²+2NO₃^-

D．KMnO₄=K⁺+Mn⁷⁺+4O^2-

Don’t tell anybody about it .Keep it          you and me.

A．to

B．for

C．with

D．between