I think the answer might be A or B. Not so sure...
The territories of Yugoslavia and Sebia-Montenegro were once in a single state just before the Soviet Union collapsed during 1991. These states became independent from the disengangement and among the effects these newly-independent states suffer was the economic disaster.

D. They think research conducted on these stem cells is too difficult.
<h3>I believe the answer is B but don't hold that on me</h3>