What Does a Negative Net Migration Rate in a Country

What does a negative net migration rate in a country tell us?

A) that more people are moving to the country than leaving it
B) that the number of people leaving the country is equal to the number moving there
C) that more people are dying in the country than are being born
D) that more people are leaving the country than moving to it
E) A negative net migration rate does not tell us anything.