Which of the following would contribute the greatest number to total population size in one year?
a. a country of 1.5 million people with a growth rate of 3%
b. a country of 5 million people with a growth rate of 2.5%
c. a country of 100 million people with a growth rate of 2%
d. a country of 500 million people with a growth rate of 1.5%
e. a country of 10 million people with a growth rate of 2.5%