Which scenario would result in a positive population growth? use this formula: population growth = (birth rate + immigration) – (death rate + emigration) a) 30 individuals emigrate, 30 individuals die, 30 individuals are born, 0 individuals immigrate b) 22 individuals emigrate, 10 individuals are born, 12 individuals immigrate, 0 individuals die c) 15 individuals immigrate, 9 individuals emigrate, 6 individuals are born, 0 individuals die d) 18 individuals immigrate, 20 individuals die, 1 individual is born, 0 individuals emigrate