An increase in capital will increase real GNP per person a. less in a poor country than a rich country. The increase in real GNP per person will be larger if the addition to capital is foreign rather than from domestic investment. b. more in a poor country than a rich country. The increase in real GNP per person will be larger if the addition to capital is foreign rather than from domestic investment. c. more in a poor country than a rich country. The increase in real GNP per person will be larger if the addition to capital is from domestic rather than foreign investment. d. less in a poor country than a rich country. The increase in real GNP per person will be larger if the addition to capital is from domestic rather than foreign investment.