JP and his family decided to take a summer trip to get away from the stresses of everyday life. They thought that a camping trip was the perfect solution. On their trip they saw white-tailed deer, red foxes, and even a bald eagle. They decided to set up their camp site underneath a patch of beech trees because their leaves provided adequate shade during the day. What type of ecosystem was JP's family camping in?

A. the tundra

B. the desert

C. the grasslands

D. the deciduous forest