In Botswana, improvements in healthcare have caused birth rates to decrease more quickly than death rates. In addition, the average number of children born to each woman has fallen from $6.4$ to $3.2$. What can be concluded from this information?
- AGovernment spending on education will need to increase.
- BMedical improvements have resulted in falling infant mortality rates.
- CThere will be a decline in income for each person working.
- DThere will, in the long run, be an increase in the working population.