2. How would each of the following transactions affect the GDP of the United States? (LO1) a. The U.S. government pays $1 billion in salaries for government workers. b. The U.S. government pays $1 billion to Social Security recipients. c. The U.S. government pays a U.S. firm $1 billion for newly produced airplane parts. d. The U.S. government pays $1 billion in interest to holders of U.S. government bonds. e. The U.S. government pays $1 billion to Saudi Arabia for crude oil to add to U.S. official oil reserves.