关于主谓搭配的问题

15.   In
good years, the patchwork of green fields that surround the San Joaquin
Valley town bustles with farm workers, many of them in the area just for
the season.

(A) surround the
San Joaquin Valley town bustles with farm workers, many of them

(B) surrounds the
San Joaquin Valley town bustles with farm workers, many of whom are

(C) surround the
San Joaquin Valley town bustles with farm workers, many of who are

(D) surround the
San Joaquin Valley town bustle with farm workers, many of which（A）

(E) surrounds the
San Joaquin Valley town bustles with farm workers, many are

在　　the A of B 结构中　　中心词是A 　那其后的that 从句中的谓语和A　还是B　一至？？？　

由句子的意思决定，各个题不一样，关键看that/which指代什么

这个没有的

强烈要求写出答案！

是不是B