The business cycle has a profound effect on the federal deficit because

a. during expansion tax revenues rise and transfer payments(such as unemployment or welfare) rise, while during a recession tax revenues fall and transfers fall.

b. during expansion tax revenues fall and transfer payments (such as unemployment or welfare) rise, while during a recession tax revenues rise and transfers fall.

c. during expansion tax revenues rise and transfer payments (such as unemployment or welfare) fall, while during a recession tax revenues fall and transfers rise.

d. during expansion tax revenues fall and transfer payments(such as unemployment or welfare) fall, while during a recession tax revenues rise and transfers rise.