At the beginning of the year, a developing country had a population of 1 000 000. Its birth rate was 16.0 per thousand per annum, and its death rate was 8.0 per thousand per annum. By the end of the year, the population had risen to 1 005 000. What might account for this change in population?
- AThe birth rate rose.
- BThe death rate fell.
- CThere were 3000 emigrants.
- DThere were 5000 immigrants.