Refer to the Personal Income Tax Schedule Given in the Table

Refer to the personal income tax schedule given in the table. If your taxable income is $4,000, your average tax rate is

A) 15 percent; your marginal rate on the last $2,000 is 15 percent.
B) 15 percent; your marginal rate on the last $2,000 is 20 percent.
C) 15 percent; your marginal rate on the last $2,000 cannot be determined from the information given.
D) 20 percent; your marginal rate on the last $2,000 is 15 percent.