Context: Figure: Tallgrass Prairie National Preserve.
Tallgrass Prairie National Preserve is a prairie grassland ecosystem in eastern Kansas. The preserve is named for its grass, which can grow over five feet tall. This type of grass once covered large parts of North America, but it is now rare. Most of the tallgrass in North America was destroyed to create farmland.
Which statement describes the Tallgrass Prairie National Preserve ecosystem?
A. It has hot summers and cool winters.
B. It has soil that is poor in nutrients.
From the given choices, select the correct answer and reply with the letter of the chosen option.

A