What Would Happen If a New Shipping Channel Was Cut

Multiple Choice

What would happen if a new shipping channel was cut through a barrier island on the east coast of the U.S. and lined with jetties where there is a strong southward longshore current?

A) The shoreline on the north side would widen seaward, and the one on the south would erode and retreat landward.
B) The shoreline on the south side would widen, and the one on the north would erode and retreat landward.
C) Both shorelines would retreat.
D) Neither shoreline would retreat.
E) All of the barrier islands would disappear because of erosion.