U.S. GNP Question 15 options: includes production of foreigners working in the U.S. and production of U.S. citizens working in foreign countries. includes production of foreigners working in the U.S. but excludes production of U.S. citizens working in foreign countries. excludes production of foreigners working in the U.S. but includes production by U.S. citizens working in foreign countries. excludes production of foreigners working in the U.S. and production by U.S. citizens working in foreign countries