A non-volatile solid solute may be separated from a solution by which of the following processes? I. Evaporation II. Crystallization. Select the correct answer using the code given below.

A non-volatile solid solute can be recovered from a solution by evaporation, in which the solvent is vaporised away leaving the solute behind. It can also be recovered by crystallization, in which the solution is cooled or concentrated so that the solute precipitates out as pure crystals. Both methods are standard laboratory techniques for separating non-volatile solid solutes from solutions, with crystallization usually giving purer product. Hence both I and II are correct.