In which of the following order the given complex ions are arranged correctly with respect to their decreasing spin only magnetic moment ?
(i) [FeF₆]³⁻
(ii) [Co(NH₃)₆]³⁺
(iii) [NiCl₄]²⁻
(iv) [Cu(NH₃)₄]²⁺

(1) (i) > (iii) > (iv) > (ii)
(2) (ii) > (iii) > (i) > (iv)
(3) (iii) > (iv) > (ii) > (i)
(4) (ii) > (i) > (iii) > (iv)