prep题求助~~很急

wrnmgd0107

2. The 151 member governments ofthe World Bank are expected to increase the bank's funding by  $75billion, though some United States legislators cite an obstacle tocongressional passage being the concern that the bank's loanswill help foreign producers compete with American businesses.  
(A) an obstacle to congressionalpassage being the concern
(B) a concern as an obstacle tocongressional passage
(C) as an obstacle tocongressional passage the concern
(D) the concern, an obstacle tocongressional passage,
(E) as an obstacle for Congress topass it the concern   
语法笔记上说E选项中it指代不清，it在这题都有哪些问题噢~~~~

287151319

E想用it指代obstacle，但是 A for sb to do 后面不能再接A了