Match the elements in Column I with methods of purification in Column II.
| Column I | Column II | ||
|---|---|---|---|
| (a) | Boron | (i) | Van Arkel method |
| (b) | Tin | (ii) | Mond's process |
| (c) | Zirconium | (iii) | Liquation |
| (d) | Nickel | (iv) | Zone refining |
(1) (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
(2) (a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)
(3) (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
(4) (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)