Column-I(Ligand)	Column-II(Classification)
I) en	A) ambidentate, uni negative
II) ox	B) bidentate, uni negative, unsymmetrical
III) gly	C) bidentate, neutral, symmetrical
IV) nitrito	D) bidentate, bi negative, symmetrical

Correct match is

• A

  I-B, II-D, III-C, IV-A

• B

  I-C, II-D, III-A, IV-B

• C

  I-C, II-D, III-B, IV-A

• D

  I-D, II-C, III-B, IV-A