A)moistening, binding and building up food particles; beginning chemical digestion of carbohydrates; and cleansing the esophagus. B)moistening, binding and dissolving food particles; beginning chemical digestion of proteins; and cleansing the esophagus. C)moistening, binding and building up food particles; beginning mechanical digestion of fats; and cleansing the teeth and mouth. D)moistening, binding and dissolving food particles; beginning chemical digestion of carbohydrates; and cleansing the teeth and mouth.