Slovenia was able to declare its secession from yugoslavia and its independence in 1991 with little opposition from yugoslavia for all of the following reasons, except
a. slovenia does not have a common border with the serbian part of the yugoslavian federation
b. almost all of the population of slovenia are slovenes, with few serbs in the region
c. the population of slovenia is greater than that of the remaining republics in the yugoslavian federation
d. croatia also declared its independence from yugoslavia at the same time as slovenia