A. 40 percent and the average tax rate is about 23 percent at the $30,000 income level.
B. 50 percent and the average tax rate is 40 percent at the $30,000 income level.
C. 40 percent and the average tax rate is 25 percent at the $25,000 income level.
D. 30 percent but average tax rates cannot be determined from the information given.
A. 40 percent and the average tax rate is about 23 percent at the $30,000 income level.