As a Result of the 1919 Paris Peace Settlement, Whose

As a result of the 1919 Paris peace settlement, whose most general principle was recognition of the right of national self-determination,

A) minority problems and irredentism no longer troubled eastern Europe.
B) there was a general and often confusing transfer of populations to sort out the new national states.
C) discontented minorities troubled all the new states of eastern Europe, since nationalities were intermixed in many places.
D) every language group was given a homeland.