What led to conflict in Bosnia between the Bosniaks and Serbians?

Question

1Expansion of the European Union led to tighter controls over ethnic diversity throughout Bosnia, causing mass migration and ethnic cleansing.

2 Free elections in Bosnia promoted a Serbian Revolution that sought to rid the region of Bosniaks through mass deportation.

3The breakup of Yugoslavia led to a decentralization of political power in the Balkan region, causing ethnic and religious clashes.

4 Military buildup of the Bosnian Liberation Front saw a coup that overthrew leading Serbian nationals, causing conflict with local Bosniaks.
is this one 2?

Answer 1

Free elections in Bosnia promoted a Serbian Revolution that sought to rid the region of Bosniaks through mass deportation. Expansion of the European Union led to tighter controls over ethnic diversity throughout Bosnia, causing mass migration and ethnic cleansing.

Answer 2

The correct answer is 3. The breakup of Yugoslavia led to a decentralization of political power in the Balkan region, causing ethnic and religious clashes.
I just took the test :)