【单选题】

The primary purpose of the passage is to

A、compare a philosopher’s system of dramatic principles with that of the author’s
B、enumerate one philosopher’s view of the principles underlying good drama
C、analyze the similarities and dissimilarities between the various dramatic principles at work in Greek drama
D、contrast one philosopher’s dramatic principles with those of the tradition that preceded him
E、demonstrate the wisdom and longevity in one philosopher’s dramatic principles