请教GWD10 的语法问题

teddyabc

请问为什么答案是C 不是E呢？

The results of the company’s cost- cutting measures are evident in its profits, which increased five percent during the first three months of this year after it fell over the last two years.
A. which increased five percent during the first three months of this year after it fell
B. which had increased five percent during the first three months of this year after it had fallen
C. which have increased five percent during the first three months of this year after falling
D. with a five percent increase during the first three months of this year after falling
E. with a five percent increase during the first three months of this year after having fallen

sumerlaws

根据语意，应该是profits增加吧，那么用which可以比用with指代的清楚，逗号加介词短语如果语意没有问题的时候最好不要选。