Coordination Compounds

The correct order of the number of unpaired electrons in the given complexes is

A. \(\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3-}\)

B. \(\left[\mathrm{Fe} \mathrm{F}_{6}\right]^{3-}\)

C. \(\left[\mathrm{CoF}_{6}\right]^{3-}\)

D. \(\left.[\mathrm{Cr} \text { (oxalate})_{3}\right]^{3-}\)

E. \(\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]\)

Choose the correct answer from the options given below: