Emigration and Immigration Are Assumed to Be Equal in a Population

Multiple Choice

Emigration and immigration are assumed to be equal in a population whose per capita growth is being estimated.However, if a population is experiencing more emigration than immigration, estimation of population size according to the equation r = b - d will cause the population size to be

A) underestimated.
B) overestimated.
C) accurately estimated.
D) impossible to determine.
E) exploding.