In What Geologic Setting Have Precambrian Rocks Remained Largely Unchanged

Multiple Choice

In what geologic setting have Precambrian rocks remained largely unchanged for billions of years?

A) at continent collision zones where the deep crust is exhumed and exposed through erosion
B) protected within the interiors of the continents far from plate boundaries
C) in Antarctica where there is very little to no erosion
D) as metamorphic rocks that are too hard to be transformed