og11的一道题

 语法很不好，那位能帮我解释一下这道题呢？谢谢~~~

        Unlike Schoenberg's
twelve-tone system that dominated the music of the postwar period, Bartok
founded no school and left behind only a handful of disciples.

(A) 
Schoenberg's twelve-tone system that dominated

(B) 
Schoenberg and his twelve-tone system which dominated

(C) 
Schoenberg, whose twelve-tone system dominated

(D)  the twelve-tone
system of Schoenberg that
            has dominated

(E) 
Schoenberg and the twelve-tone system,
            dominating

unlike做比较词的时候，比较对象一定要严格对称，而且只能跟名词或者名词词组。

所以bartok和schoenberg对称，whose引导的非限定性从句修饰schoenberg，做插入语。