Which of the following best analyzes the problem with superimposed boundaries?
A. Superimposed boundaries use human-made structures to prevent people from crossing them.
B. Superimposed boundaries are hard to define and change as a result of changes in nature.
C. Superimposed boundaries are established without regard to the societies of the region.
D. Superimposed boundaries are historic and have no relevance to the current state of the region.