What is the main principle behind evaporation in separating a soluble solid from a liquid?

• A. The boiling point of the solvent allows it to vaporize, leaving the solid behind.
• B. The solubility of the solid increases with temperature.
• C. The freezing point of the solvent allows it to solidify, leaving the solid behind.
• D. The melting point of the solid allows it to dissolve completely.

Answer: (A)