The Distinction Between A Barrier Island and a sea Island

The distinction between a barrier island and a sea island is:

A) barrier islands are erosional coastal features whereas sea islands are depositional coastal features.
B) barrier islands are less affected by storm surge and erosion in a storm than sea islands.
C) barrier islands are most common on the west coast of the U.S, in contrast to sea islands which are common on the west and east coast of the U.S.
D) barrier islands are transient depositional features whereas sea islands have bedrock foundations.
E) barrier islands are typical of secondary coasts where biological processes modify the original coastline and sea islands are more of a feature associated with primary coasts.