Which of the Following Statements Is True of Talk Radio

Which of the following statements is true of talk radio?

A) Today, five of the top six talk-radio shows, as measured by Arbitron ratings, are politically liberal.
B) Modern talk radio took off in the United States during the 1930s.
C) The growth of talk radio was made possible by the Federal Communications Commission's repeal of the fairness doctrine in 1987.
D) Franklin D. Roosevelt's "fireside chats" were the last talk-radio shows.
E) Its listeners are female, elderly, and liberal.