When salt is added to water, what happens is some phenomena studied in Colligative properties, which will tell us that if salt is added, the boiling point and freezing point will have slight changes. Boiling point will go through a phenomenon called Boiling point elevation, which even though the elevation is not much, there is still a slight elevation. The freezing point will go through Freezing point depression, which is a slight decrease of the freezing point of water. Therefore the best answer will be letter A