急急急！！！OG12（SC）—134，关于C选项的问题。

零度变蓝

134.Recently implemented "shift-work equations" based on studies of the human sleep cycle have reduced sickness, sleeping on the job, fatigue among shift workers, and have raised production efficiency in
various industries.



(A)fatigue among shift workers, and have raised

(B)fatigue among shift workers, and raised

(C)and fatigue among shift workers while raising

(D)lowered fatigue among shift workers, and raised
(E)and fatigue among shift workers was lowered while raising

C中为什么可以用raising？上文没有本动词呀？？求大侠帮忙，不胜感激！

LifeCreator

raising 不是平行结构的一部分