Context: Figure: Kaeng Krachan National Park.
Kaeng Krachan National Park is a tropical rain forest ecosystem in western Thailand. It is Thailand's largest national park and has many animals, including elephants.
Which statement describes the Kaeng Krachan National Park ecosystem?
A. It has soil that is rich in nutrients.
B. It has only a few types of organisms.
C. It has soil that is poor in nutrients.
Answer with the option's letter from the given choices directly.

C