Contrast the accounting and economic concepts of income. O A. Accountants define income as the amount that an individual could consume during a period and remain as well off at the end of the period as he or she was at the beginning of the period. Economists measure income when it is realized in a completed transaction. OB. Accountants include unrealized gains, as well as gifts and inheritances, as income. Economists only include amounts that have been realized as income. O C. Economists traditionally use historical costs to measure income. Accountants adjust for inflation when measuring income. OD. Economists define income as the amount that an individual could consume during a period and remain as well off at the end of the period as he or she was at the beginning of the period. In accounting, income is measured by a transactions approach. Accountants measure income when it is realized in a completed transaction