Coordination Compounds

Match List I with List II.

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List I $($ Complex)	List II (Oxidation number of metal)
A. $\mathrm{Ni}(\mathrm{CO})_4$	I. +1
B. $\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_5 \mathrm{NO}\right]^{2+}$	II. Zero
C. $\left[\mathrm{Co}(\mathrm{CO})_5\right]^{2-}$	III. -1
D. $\left[\mathrm{Cr}_2(\mathrm{CO})_{10}\right]^{2-}$	IV. -2

Choose the correct answer from the options given below: