The author uses Mack's "categories" most probably in order to A. argue that the Iliad should replace the Odyssey as the more popular poem B. indicate Mack's importance as a commentator on the Iliad and the Odyssey C. suggest one way in which the Iliad and the Odyssey can be distinguished D. point out some of the difficulties faced by readers of the Iliad and the Odyssey E. demonstrate that the Iliad and the Odyssey can best be distinguished by comparing their respective heroes