The complex K4[Zn(CN)4(O2)2] is oxidised into Kz[Zn(CN)4(O2)2], then which of the following is correct ?
(A) Zn(II) is oxidised into Zn(IV)
(B) Paramagnetic moment decreases
(C) O-O bond length increases
(D) Paramagnetic moment increases​