Which statement below describes the landform shown at X? A. It is a coastline that formed from constant erosion or sediment built up due to rising and falling sea levels.

B. It is dune that formed by coastal winds eroding beach sand and depositing it into the mouth of a river over time.

C. It is a headwater that formed as ocean waves eroded the land and deposited sand, rock and sediment in the ocean.

D. It is a delta that formed when a river slowed down into the ocean causing rocks and sand to be deposited and built up over time.