Which of the Following Statements About Political Parties Is Correct

Which of the following statements about political parties is correct?

A) During the nineteenth century, political parties employed hundreds of thousands of workers to organize and mobilize voters.
B) During the nineteenth century, political parties were more interested in fund-raising than in organizing and mobilizing voters.
C) Political parties have never attempted to organize and mobilize voters because doing so would violate the Constitution.
D) Since 2000, political parties have reduced efforts to organize and mobilize voters because doing so would violate federal campaign finance laws.