单项选择题

Why does the author NOT think highly of the distinction of "conservative" and "experimental"

A.Because these poets wrote in very different styles.
B.Because these poets had a lot in common and it's no need to classify them.
C.Because these poets were fundamentally united by a sense of racial achievement despite differences in poetic styles.
D.Because such a method of classification would fail to take account of the influence of general poetic practice.