Many Rocky Coasts Occur Along Active Margins

Many rocky coasts occur along active margins. This is because

A) active margins are associated with larger storms, which cause more erosion of sediment, leading to fewer beaches.
B) subduction along active margins consumes coastal sediments.
C) active margins often experience repeated uplift, and thus the waves have not had sufficient time to erode the land surface down to sea level.
D) active margins tend to have far fewer streams that feed sediment to the oceans; thus, there is not enough sand to create beaches.