Which statements are true? Choose all answers that are correct. a. Senators and members of the House of Representatives must agree to serve at least two terms in office. b. Senators and members of the House of Representatives must live in the state they represent. c. Senators have to have been a U. S. citizen for nine years prior to being elected; members of the House of Representatives must be American citizens for seven years before being elected. d. Senators must be at least 30 years old; members of the House of Representatives must be at least 25.