Read each sentence carefully. Match the letter of the best answer described by the sentences on the left.

A. Delta System Estuary
B. Coastal Plain Estuaries
C. Fjords Estuaries
D. Fjords Estuaries
E. Tectonic Estuaries

___1. It is formed when the tide rises and fills in the existing river valley.
___2. It is a type of estuary that is formed by glaciers deposit a long time ago.
___3. They are formed because of the movement of Earth's crust due to an earthquake.
___4. Sand bars and barrier islands are made by the ocean currents and waves in coastal areas.
___5. It is formed at the mouths of large rivers, once sediments and silt piled up.