请教白勇语法书188页第八题

白勇语法188页第8题：

In feudal Europe, urban areas developed from clusters of houses where peasants lived and commuted to farmlands in the countryside, unlike homesteading policies in the American West that required residency on the land in order to obtain eventual ownership.

A

B In feudal Europe, urban areas developed from clusters of houses where peasants lived and from which they commuted to farmlands in the countryside, but in the American West homesteading policies

C Unlike feudal Europe where urban areas developed from clusters of houses where pleasants lived and commuted to farmlands in the countryside, the American West's homesteading policies

D Unlike feudal Europe where urban areas developed from clusters of houses where peasants lived and commuted to farmlands in the countryside, the homesteading policies of the American West

E Urban areas developed from clusters of houses where pleasants lived from which they commuted to farmlands in the countryside in fuedal Europe, unlike the American West where homesteading policies

白勇给出的正确答案是B。可是在B中， where peasants lived and from which they commuted to farmlands in the countryside,能够并列吗？按照白勇在并列结构中的解释，where peasants lived应该是做状语性定语从句，而from which they commuted to....作限定性定语从句，功能不同，怎么能并列呢？因此，B我觉得也不对。

请问，我的理解对吗？请大牛指点。

我觉得where...和from which都是限定定语从句,我想,实限定性从句也是状语性从句的一种吧,都是起到修饰的作用

另外where=in which

其实就是in which和from which的并列