Malik's mother baked several loaves of bread. After a few days, the bread was bluish-gray. The store-bought bread they usually ate had not changed color. Malik asked his mother why her homemade bread had changed color but the other did not. "The store bought bread has preservatives," answered his mother. What is the function of preservatives in the store bought bread? A) The preservatives change the taste of the bread. B) The preservatives cause the bread to rise while baking. C) The preservatives slow the growth of mold and bacteria. D) The preservatives are used to make the bread feel softer.