Match the coordination given in Column-I with the central metal atoms given in Column-II and assign the correct code.

Column-I

(Coordination compound)

Column-II

(Central metal atom)

A. Chlorophyll (i) Rhodium
B. Blood pigment (ii) Cobalt
C. Wilkinson's catalyst  (iii) Magnesium
D. Vitamin B12  (iv) Iron 

Codes:

 A   B   C   D 
1. (ii) (iii) (iv) (i)
2. (iii) (iv) (i) (ii)
3. (i) (iv) (iii) (ii)
4. (iv) (i) (iii) (ii)