Context: Figure: Bering Land Bridge National Preserve.
Bering Land Bridge National Preserve is a tundra ecosystem in western Alaska. The preserve is home to herds of caribou, muskoxen, and reindeer.
Which statement describes the Bering Land Bridge National Preserve ecosystem?
A. It has soil that is frozen year-round.
B. It has dry, thin soil that is rich in nutrients.
C. It has many evergreen trees.
From the given choices, select the correct answer and reply with the letter of the chosen option.

A