Match the compounds given in Column I with the oxidation state of cobalt present in it (given in Column II) and assign the correct code.
| Column I (Compound) | Column II (Oxidation state of Co) |
| A. [Co(NCS)(NH3)5](SO3) | 1. + 4 |
| B. [Co(NH3)4Cl2]SO4 | 2. 0 |
| C. Na4[Co(S2O3)3] | 3. + 1 |
| D. [Co2(CO)8] | 4. + 2 |
| 5. + 3 |
Code :
(i) A (1) B (2) C (4) D (5)
(ii) A (4) B (3) C (2) D (1)
(iii) A (5) B (1) C (4) D (2)
(iv) A (4) B (1) C (2) D (3)
