n the circular flow of expenditure and​ income, why must the total value of production in an economy equal the total value of​ income? A. Taxes on the production of goods and services are determined according to individual income. B. Domestic expenditures on imports generally equal foreign expenditures on U.S. exports. C. Every penny spent on a good or service must end up as​ someone's income. D. People tend to spend all of their income on goods and services.