Solve these 3 questions...20-22

QUESTION 20 2 poi A recession has traditionally been defined as a period during which O a. real GDP declines for two consecutive quarters. O b. nominal GDP declines for four consecutive quarters. O c. real GDP declines for four consecutive quarters. O d. nominal GDP declines for two consecutive quarters. QUESTION 21 2 poir If the tax revenue of the federal government is less than its spending. then the federal government necessarily O a. will increase taxes. O b. runs a budget surplus. O c. runs a budget deficit. O d. runs a national debt. QUESTION 22 2 poir In the equation Y= C+/+ G+ NX, O a. Y represents the economy's total expenditure. O b. C represents household expenditures on services and durable goods. O c. all of the variables are always positive numbers. O d. All of the above are correct