The two oil companies agreed to merge their refining and marketing operations in the Midwest and the West, forming a new company for controlling nearly fifteen of the nation’s gasoline sales.
A. forming a new company for controlling
B. forming a new company that would control
C. which would form a new company that controlled
D. which formed a new company for controlling
E. which formed a new company that would control
Why is the answer B, but not A? Can you provide insight between A and B.
OA: B
source: GMAT Prep