10. Table 1.8 summarizes hypothetical transactions, in billions of U.S. dollars, that took place during a given year. 25 450 -20 15 TABLE 1.8 International Transactions of the United States (billions of dollars) Travel and transportation receipts, net Merchandise imports Unilateral transfers, net Allocation of SDRs Receipts on U.S. investments abroad Statistical discrepancy Compensation of employees Changes in U.S. assets abroad, net Merchandise exports Other services, net Payments on foreign investments in the United States 20 40 -150 375 35 -10 a. Calculate the U.S. merchandise trade, services, goods and services, income, unilateral transfers, and current account balances. b. Which of these balances pertains to the net foreign investment position of the United States? How would you describe that position