Examine the summary of the balance of payments of the United States for 2021. Compute and discuss the balance on the financial account and its subaccounts. A Summary of the U.S. Balance of Payments for 2021 (in \$ billion) Source: The U.S. Bureau of Economic Analysis Required: a-1. Compute the balance on the U.S. direct investment. a-2. What does the balance on the U.S. direct investment you computed above mean? b-1. Compute the balance on the U.S. portfolio investment. b-2. What does the balance on the U.S. portfolio investment you computed above mean? c-1. Compute the balance on the U.S. financial account. c-2. What does the balance on the U.S. financial account you computed above mean? Complete this question by entering your answers in the tabs below. What does the balance on the U.S. direct investment you computed above mean