AN insect population after x months can be modeled by the function g(x) = 11(1.2)^x. Which statement is the best interpretation of one of the values in this function?
A. The insect population increased by 12 insects each month
B. The insect population decreased by 12 insects each month
C. The insect population increased at a rate of 20% each month
D. The insect population decreased at a rate of 20% each month