单项选择题

A.[Ag+]=[NH3]=0.1mol/L
B.2[Ag+]=[NH3]=0.2mol/L
C.[Ag+]+[Ag(NH3)+]+2[Ag(NH32+]=0.1mol/L
D.[NH3]+[Ag(NH3)+]+2[Ag(NH32+]=0.2mol/L