43. Which of the following statements is true regarding the polysaccharides starch, glycogen, cellulose, and chitin? (A) All have 1-4 linkages. (B) Starch is built from a different monomer than are the others. (C) Only chitin has a core protein. (D) Each is built from a single type of monomer. (E) Chitin and cellulose differ from each other only in the extent of their branching.