Out of `[Fe(CN)_6]^(4-)`,`[Ni(CN)_4]^(2-)`, and `[Ni(CO)_4]`: select the incorrect Statement(s):
A. All have identical geometry
B. All are paramagnetic
C. all are diamagnetic
D. `[Fe(CN)_6]^(4-)` is dimagnetic but `[Ni(CN)_4]^(2-)` and `[Ni(CO)_4]` are paramagnetic
