Observe the given reaction carefully and fill in the blanks by choosing an appropriate option.
Fe(s) + CuSO4(aq) → FeSO4(aq) + Cu(s)
Before reaction, iron is (i) in colour and solution is (ii) in colour. After reaction iron gets (iii) deposits and the solution becomes (iv) in colour.
| (i) | (ii) | (iii) | (iv) | |
| A | Grey | Colourless | Red | Blue |
| B | Red | Blue | Grey | Green |
| C | Grey | Blue | Brown | Green |
| D | Red | Colourless | Grey | Green |
C is the answer