Deduce the formula that represents the population growth rate.
A - Population growth rate = (death + emigration) - (birth -immigration)
B - Population growth rate = (death + immigration) -(death + emigration)
C - Population growth rate = (birth - death) + (immigration - emigration)
D - Population growth rate = (death + emigration) - (birth + immigration)
Answer: B - Population growth rate = (death + immigration) -(death + emigration)