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) whichincreased five percent during the first three months of this year afterit fell = Incorrect Tense and usage of "it" is incorrect for plural subject "profits"
(B) whichhad increased five percent during the first three months of this year afterit had fallen = Incorrect Tense and
...
(A) whichincreased five percent during the first three months of this year afterit fell = Incorrect Tense and usage of "it" is incorrect for plural subject "profits"
(B) whichhad increased five percent during the first three months of this year afterit had fallen = Incorrect Tense and
...
