[求助]

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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
答案选C ，不过这里while是引导平行结构，那raising时态也不和have reduced 一致啊？

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“shift-work equations" have reduced [sickness, sleeping on the job, and  fatigue among shift workers] While raising production efficiency in various industries.