A badger lives in Oak Grove Forest. It is a female and it is four years old. Which of the following animals could be considered a member of this badger's population?
A. a two-year old male red fox living in Oak Grove Forest
B. a ten-year-old female skunk living in Pine Warden Forest
C. a four-year-old female badger living in a zoo
D. a ten-year-old male badger living in Oak Grove Forest