Because of its effect on the amount of capital per worker, in the short term an increase in the working population is likely to
a. reduce productivity. Other things the same, this decrease will be larger in a rich country.
b. reduce productivity. Other things the same, this decrease will be larger in a poor country.
c. raise productivity. Other things the same, this increase will be larger in a poor country.
d. raise productivity. Other things the same, this increase will be larger in a rich country.