Context: Figure: Scarborough Marsh.
Scarborough Marsh is a wetland ecosystem in southern Maine.
Which better describes the Scarborough Marsh ecosystem?
A. It has land that is covered with water during most of the year. It also has soil that is poor in nutrients.
B. It has soil that is rich in nutrients. It also has other water ecosystems nearby.
From the given choices, choose the correct answer and respond with the letter of that choice.

B