求GRE一篇短阅读的解释

求GRE一篇短阅读的解释
Extended debate concerning the exact point of origin of individual folktales
told by Afro-American slaves has unfortunately taken precedence over analysis of
the tales’ meaning and function. Cultural continuities with Africa were not
dependent on importation and perpetuation of specific folktales in their
pristine form. It is in the place that tales occupied in the lives of the slaves
and in the meaning slaves derived from them that the clearest resemblances to
African tradition can be found. Afro-American slaves did not borrow tales
indiscriminately from the Whites among whom they lived. Black people were most
influenced by those Euro-American tales whose functional meaning and aesthetic
appeal had the greatest similarity to the tales with deep roots in their
ancestral homeland. Regardless of where slave tales came from, the essential
point is that, with respect to language, delivery, details of characterization,
and plot, slaves quickly made them their own.

Which of the following techniques is used by the author in developing the
argument in the passage?
　　(A) Giving a cliché a new meaning
　　(B) Pointedly refusing to define key terms
　　(C) Alternately presenting generalities and concrete details
　　(D) Concluding the passage with a restatement of the first point made in
the passage
　　(E) Juxtaposing statements of what is not the case and statements of what
is the case

正确答案是E,其他几个选项有什么问题?

这里A因为没有给出cliché
B这里key terms只有说 Cultural continuities,并未刻意不解释这个名词,而是默认读者知道了.
C这里全文都属于generalities 并没有具体用例证的方法（xxxx年 哪里的奴隶 什么样的folktales)
D这里 Regardless of where slave tales came from,the essential
point is that,with respect to language,delivery,details of characterization,
and plot,slaves quickly made them their own.
和Extended debate concerning the exact point of origin of individual folktales
told by Afro-American slaves has unfortunately taken precedence over analysis of
the tales’ meaning and function.
the first point 是说研究倾向
conclusion是对后面同化问题的一个总结
这是一个偶比较喜欢的历史问题 白人在几百年黑奴贸易中,很大程度上同化黑奴失败了 而一般情况下 这都是很容易成功的
Sincerely,
Kyon
再问： 再问一下纠结的问题，谢谢 (C) The functional meaning of Black folktales in the lives of White children raised by slave 选项C错在什么地方了？(字数限制就不打全了)
再答： 它这里还是强调"cultural continuities" 和 "africa" 所以这个证据必须和Africa以及slaves' folktales 都有关系 这个只是说黑人民间传说与在黑人熏陶下成长的白人孩子的关系 也就是说提到 America 和 slaves关系 没提到Africa origin和slaves' folktales关系这一点
再问： 我感觉是C没有提到D中的impart以及specific way,就谈不上是文化传承的过程，也就揭示不了和非洲的cultural continuity, 和你提到的Africa origin有点类似