Context: Figure: Mount Rainier National Park.
Mount Rainier National Park is a taiga ecosystem in Washington State.
Which better describes the Mount Rainier National Park ecosystem?
A. It has long, cold winters. It also has soil that is poor in nutrients.
B. It has mostly small plants. It also has soil that is frozen year-round.
Determine the correct option from the provided choices and reply with its corresponding letter.

A