Out of the following which will not show geometrical isomerism ?
Out of the following which will not show geometrical isomerism ?
A. `[Co(NH_(3))_(4)Cl_(2)]^(+)`
B. `[Co(en)_(3)]^(3+)`
C. `[Co(en)_(2)Cl_(2)]Cl`
D. `[Cr(NH_(3))_(4)Cl_(2)]Cl`
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