Correct match is
I-B, II-D, III-C, IV-A
I-C, II-D, III-A, IV-B
I-C, II-D, III-B, IV-A
I-D, II-C, III-B, IV-A
A en...H2N-CH2-CH2-NH2; B ox....C2O4-2; C gly...H2N-CH2-COO-; D nitrito...NO2- or ONO- ;