Which of the Following Is NOT Normally a Reason Why

Which of the following is NOT normally a reason why coastal erosion from cyclones is a problem?

A) Valuable beach may be eroded causing economic problems.
B) Vegetation and sand dunes may be eroded causing inland structures to become more vulnerable to storms.
C) Boats on inland bays may be cut off from the ocean by sediment blocking inlets.
D) Ground may become eroded bringing down structures.
E) Sand from coastal erosion gets airborne and becomes an air pollutant.