Which of the following sentences is punctuated correctly?
A.
Most of Alaska, averages a population density, of under 3 people per square mile.
B.
Most of Alaska averages, a population, density of under 3 people per square mile.
C.Most of Alaska averages a population density of under 3 people per square mile.
D. Most of Alaska averages a population density, of under, 3 people per square, mile