一道GRE阅读题This is not to deny that the Black gospel music of t

一道GRE阅读题
This is not to deny that the Black gospel music of the early twentieth century differed in important ways from the slave spirituals.Whereas spirituals were created and disseminated in folk fashion,gospel music was composed,published,copyrighted,and sold by professionals.Nevertheless,improvisation remained central to gospel music.One has only to listen to the recorded repertoire of gospel songs to realize that Black gospel singers rarely sang a song precisely the same way twice and never according to its exact musical notation .They performed what jazz musicians call “head arrangements” proceeding from their own feelings and from the way “the spirit” moved them at the time.This improvisatory element was reflected in the manner in which gospel music was published.
10.Of the following sentences,which is most likely to have immediately preceded the passage?
（A） Few composers of gospel music drew on traditions such as the spiritual in creating their songs.
（B） Spirituals and Black gospel music were derived from the same musical tradition.
（C） The creation and singing of spirituals,practiced by Black Americans before the Civil War,continued after the war.
（D） Spirituals and gospel music can be clearly distinguished from one another.
（E） Improvisation was one of the primary charac－ teristics of the gospel music created by Black musicians.
这道题为什么选B?文章开头不是说This is not to deny了吗?难道前面的内容不应该在讲是gospel music和spirituals之间的不同?

“S歌和G歌起源于相同的音乐传统‘,（这句话）,并不是否认G歌和S歌有不同.
相当于尽管在起源上相同,但是很多地方都不同