Additional solute is added to a saturated solution of a solid and a liquid after being heated above room temperature. Once no more of the solute can dissolve, the solution is cooled, and a seed crystal is added. At which of the following points is the solution unsaturated?a. Before the solution is heated, when the concentration of the solute is equal to its solubility in the liquidb. After the solution is heated, but before additional solute is addedc. After the solution is heated and more solute is added, but before it is cooledd. Before the solution is heated, when the concentration of the solute is less than its solubility in the liquid