Match the following equilibria with the corresponding condition.

A. Liquid ⇌ Vapour I. Saturated solution
B. Solid ⇌ Liquid II. Boiling point
C. Solid ⇌ Vapour III. Sublimation point
D. Solute (s) ⇌ Solute (solution) IV. Melting point
V Unsaturated solution

Codes:

A B C D
1. II IV III I
2. I II III V
3. V IV III II
4. IV V III II