Which of the Following Statements Is True About the Regulation

Which of the following statements is true about the regulation of lobbyists?

A) Lobbyists have been regulated since 1946,when they were first required to register with the clerks of the House and Senate.
B) The Lobbying Disclosure Act requires individuals and corporations engaged in lobbying to register with the House of Commons.
C) Four times a year,the individuals and corporations engaged in lobbying must disclose their political contributions to candidates.
D) The House and the Senate have adopted different rules to prevent the appearance of impropriety.