Context: Figure: Mount Rainier National Park.
Mount Rainier National Park is a taiga ecosystem in Washington State. The park is named after a volcano called Mount Rainier, which is covered in glaciers.
Which statement describes the Mount Rainier National Park ecosystem?
A. It has many evergreen trees.
B. It has soil that is frozen year-round.
Determine the correct option from the provided choices and reply with its corresponding letter.
Answer: A