please a1-a6 and b1-b6

b-1. Compute the balance on the U.S. primary income. b-2. What does the balance on the U.S. primary income you computed above mean? c-1. Compute the balance on the U.S. secondary income. c-2. What does the balance on the U.S. secondary income you computed above mean? d-1. Compute the balance on the U.S. current account. d-2. What does the balance on the U.S. current account you computed above mean