The 151 member governments of the World Bank are expected to increase the bank's funding by $175 billion, though some United States legislators cite an obstacle to congressional passage being the concern that the bank's loans will help foreign producers compete with American businesses.

A. an obstacle to congressional passage being the concern
B. a concern as an obstacle to congressional passage
C. as an obstacle to congressional passage the concern
D. the concern, an obstacle to congressional passage
E. as an obstacle for Congress to pass it the concern

OA is C

I brought it down to the OA and E but I cant figure out what is wrong with E. Isn't the pronoun 'it' is referring to the bank's funding? I read elsewhere that the pronoun doesn't refer to anything in particular. In the OA, the 'congressional passage' must refer to something.. can it just hang in there without an object? That's the reason I picked E.

SC experts on the forum - please enlighten me on this one!

Thanks.