If a Population Has a Birth Rate of 40 Individuals

If a population has a birth rate of 40 individuals per 1,000 per year and a death rate of 30 individuals per 1,000 per year,how will the population change each year? (Assume that the population is below carrying capacity and that there is no immigration or emigration.)

A) It will increase by 1%.
B) It will decrease by 70%.
C) It will increase by 5%.
D) It will increase by 100%.