Identify the correct relationship:

Options

A. In `[Cu(NH_(3))_(4)]^(2+)` complex Hybrization of `Cu=dsp^(2)`
B. `Fe(CO)_(x)` where `x` generally 5
C. `Zn^(2+)` complexes with `sp^(3)d^(2)` hybridization are diamagnetic in nature
D. `Cr^(3+)` complexes are paramagnetic in nature

Explanation

A, B, C, D