5-4 Classify solutions as saturated, supersaturated or unsaturated

5-4-1. If figure A represents a saturated solution, figure B can be described as...
A. unsaturated and less dilute
B. unsaturated and less concentrated
C. supersaturated and more concentrated

5-4-2. The solubility of sodium nitrate in water is 85 g NaNO₃ per
100 g of water at 20^oC. At 50^oC, the solubility is 115 g NaNO₃ per 100 g of water. A saturated solution of NaNO₃ is prepared by mixing 150 g of NaNO₃ and 100 g of water at 20^oC. When this mixture is heated to 50^oC, the resulting solution will be...
A. unsaturated, B. still saturated, C. supersaturated