Which of the Following Is Correct About the U

Which of the following is correct about the U.S. tax system?

A) The primary federal tax system is regressive, while the primary state and local tax systems are progressive.
B) Both the primary federal tax system and the primary state and local tax systems are regressive.
C) The primary federal tax system is progressive, while the primary state and local tax systems are regressive.
D) Both the primary federal tax system and the primary state and local tax systems are progressive.