28. Which of the following is an example of payroll tax? A. Social Security tax. B. Federal Income tax. C. Sales tax. D. State Income Tax E. Property tax. 29. Which of the following is an example of mandatory spending? A. Spending on infrastructure. B. Spending on education. C. Spending on national defense. D. Spending Medicare. E. Spending on environmental protection 30. Which of the following is an automatic stabilizer? A. Social security payment. B. Stimulus payment. C. Unemployment insurance payment. D. Bonus to workers