An increase in immigration in a country O A. will lead to an increase in the growth rate of population, an increase in the growth rate of real GDP, and a decrease in the growth of real GDP per capita. O B. can mean an increased growth of real GDP, and an increase in the growth of real GDP per capita. O C. will lead to an decrease in the growth rate of population, an increase in the growth rate of real GDP, and a decrease in the growth of real GDP per capita. O D. can mean a decrease growth of real GDP which will correspond to an increase in the growth of real GDP per capita