What will the long term effect of mass wasting be on oversteepened slopes?
A) It will fill in the lowland up to the level of the surrounding highland region.
B) It will perpetuate catastrophic mass failures until the entire highland region is removed
C) It will eventually restore an equilibrium profile by reducing the slope angle.
D) It will cause the steep slopes to retreat uniformly, widening the valley but keeping the steep slopes at the margins.
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