Which statement about early television is false?
1) The federal government largely kept big business sponsorship out of television advertising.
2) In the 1920s there were experiments in broadcasting pictures and sound.
3) All three major television networks began as radio companies.
4) In 1946, there were 17,000 television sets in the United States.
5) Television became the country's most important means of transmitting information in the 1950s.
