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.
government-owned oil reserves.