Which complex possess facial isomer?

Options

A. `K[Fe(NH_(3))_(2)(CN)_(4)]`
B. `[Co(NH_(3))_(2)(NO_(2))_(3)]`
C. `[Co(NH_(3))_(4)CO_(3)]Cl`
D. `[Ni(H_(2)O)_(4)(NH_(3))_(2)]SO_(4)`

Answer

B

Explanation

The facial(fac) and meridional(mer) isomers of [`Co(NH_(3))_(3)(NO_(2))_(3)]`- (M `a_(3) b_(3)` type)