.The correct increasing order of trans-effect of the following species is
(a) \(NH_{3} > CN^{-} > Br^{-} > C_{6}H_{5}^{-}\)
(b) \(CN^{-}\) > \(C_{6}H_{5}^{-} > Br^{-} > NH_{3}\)
(c) \(Br^{-} > CN^{-} > NH_{3} > C_{6}H_{5}^{-}\)
(d) \(CN^{-} > Br^{-} > C_{6}H_{5}^{-} > NH_{3}\)