The population density of a certain 750 square mile area in 1980 was 1077 people per square mile. In 1990, the population density was 1137 people per square mile. In 2000, the population density was 1144 people per square mile. In 2010, the population density was 1193 people per square mile. What was the population of this area in 1980?
A. The population was 807240 people.
B. The population was 807590 people.
C. The population was 807750 people.
D. The population was 807710 people. ​