The Initial Population of Kaibab Deer in 1906 Was About

The initial population of Kaibab deer in 1906 was about 4000. In an area of about 800,000 acres, this works out to an average density of one deer per 200 acres. What is the density in 1923?

A) one deer per 20 acres
B) one deer per 500 acres
C) one deer per 8 acres
D) one deer per 0.8 acre
E) one deer per 80 acres