The correct increasing order of trans-effect of the following species is

Question

The correct increasing order of trans-effect of the following species is

NH₃ > CN^$-$ > Br^$-$ > C₆H₅^$-$

CN^$-$ > C₆H₅^$-$ > Br^$-$ > NH₃

Br^$-$ > CN^$-$ > NH₃ > C₆H₅^$-$

CN^$-$ > Br^$-$ > C₆H₅^$-$ > NH₃

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