Which of the Following Is a Difference Between Senators and Representatives

Which of the following is a difference between senators and representatives?

A) Senators mirror the views of their constituents, regardless of their opinions, whereas representatives follow their own ideals.
B) Senators are elected to represent all of the people in a state, whereas representatives are elected by the voters of a particular area.
C) Senators are elected every second year by popular vote, whereas representatives are elected every six years by popular vote.
D) Senators must be at least twenty-five years of age, whereas representatives must be at least thirty years of age.
E) Senators need not be residents of the state from which they are elected, whereas representatives must be legal residents of the state from which they are elected.