2. Which of the following is true of glycolipids? (A) Usually more than 10 sugar units are attached to the glycolipid. (B) Fructose and sucrose are often part of glycolipids. (C) Glycolipids contain phosphatidic acid. (D) Laurate is a glycolipid. (E) Glycolipids are usually found on the exterior surface of the plasma membrane.