Table 12-20 the Following Table Presents the Total Tax Liability for an for an Unmarried

Multiple Choice

Table 12-20
The following table presents the total tax liability for an unmarried taxpayer under four different tax schedules for the income levels shown.
-Refer to Table 12-20. Which tax schedules are proportional?

A) Tax Schedule B only
B) Tax Schedule B and Tax Schedule C
C) Tax Schedule D only
D) Tax Schedule A and Tax Schedule B