Which of the Following Is an Example of the Differences

Which of the following is an example of the differences between the Atlantic and Pacific coasts of the Americas?

A) The Atlantic coast can be accessed by an extensive system of rivers and streams, while the Pacific coast has far fewer inland access points.
B) The Pacific coast is served by a complex network of inland waterways, while the Atlantic is reachable only through a handful of navigable rivers and streams.
C) The Atlantic coast is largely arid and semiarid, while the Pacific coast is largely tropical and subtropical.
D) The Pacific coast was sparsely populated until recently, while the Atlantic coast has been densely populated for thousands of years.