Context: Figure: Catoctin Mountain Park.
Catoctin Mountain Park is a temperate deciduous forest ecosystem in Maryland. Most of this forest was cut down for its wood in the early 1900s. But since the 1940s, conservation efforts have allowed the forest to return to much of this park.
Which statement describes the Catoctin Mountain Park ecosystem?
A. It has only a few types of trees.
B. It has soil that is poor in nutrients.
Determine the correct option from the provided choices and reply with its corresponding letter.

A