43. The reactions of with NHs (reaction I) and of with [NO2]- (reaction II) followed by NH3 are ways of preparing: (A) I: trans-[PtCl2(NH3)2]； II: trans-(PtCl2(NH3)(NO2)]- (B)I: cis-[PtCl2(NH3)2]；II: trans-(PtCl2(NH3)(NO2)]- (C) I: cis-[PtCl2(NH3)2]； II: cis-[PtCl2(NH3)(NO2)]- (D) I: trans-[PtCl2(NH3)2]； II: cis-PtCl2(NH3)(NO2)] -