You make a solution of a nonvolatile solute with a liquid solvent. Indicate if each of the following statements is true or false.

(a) The freezing point of the solution is unchanged by addition of the solvent.

(b) The solid that forms as the solution freezes is nearly pure solute.

(c) The freezing point of the solution is independent of the concentration of the solute.

(d) The boiling point of the solution increases in proportion to the concentration of the solute.

(e) At any temperature, the vapor pressure of the solvent over the solution is lower than what it would be for the pure solvent.