In the month of September, a bird population increased by a factor of 1.25 every day for those 30 days. The function below shows the number of birds, f(x), after x days:f(x) = 250(1.25)xWhich of the following is a reasonable domain for the function?0 ≤ x ≤ 2500 ≤ x ≤ 30All positive integers greater than 100All real numbers