46. How many of the following compounds exhibit geometric isomers?
I: Pd(NH3)2Br2 (square planar) II: [Co(NH3)2]Cl3 III: [Ni(NH3)4(NO2)2] IV: K2[CoBr4] (A) 0 (B) 1 (C) 2 (D) 3 (E) 4