Comparing the Evolution of Domesticated Dogs to the Evolution of Wolves

Comparing the evolution of domesticated dogs to the evolution of wolves over the same time period illustrates what relationship between artificial and natural selection?

A) Artificial selection is slower than natural selection.
B) Artificial selection is reversible; natural selection is not.
C) Artificial selection is more likely to produce maladaptive structures than natural selection.
D) Artificial selection cannot produce changes as large as changes produced by natural selection.
E) In artificial selection,the magnitude of the selection pressure can be varied; in natural selection,it cannot.