SAT WR questions

CR7_ManUtd
Mon, 08 Jun 2009 17:16:42 +0000

Space excursion have not been arranged yet ( because they would be expensive )

A) as it is
E) as they are requiring a lot of money

So guiys,what do you think ?
I put E .I know A) is more succinct ,but didnt seem grammatically correct .Have not been is a present (perfect) form ,as it is ‘‘are requiring’’ ,while ‘‘would be’’ refers to the past . Am I correct ?