Which of the Following Statements About Radio in the 1920s

Which of the following statements about radio in the 1920s is LEAST accurate?

A) Radio exposed white listeners to the works of black artists whose works they might have otherwise rejected out of hand.
B) Radio allowed black listeners to hear the work of black artists whose live performances took place in clubs which excluded blacks.
C) Even as black artists came to dominate the national airwaves,they received little exposure on local stations,which mostly remained under the control of conservative white owners.
D) Black musical styles such as jazz and dance band became the most popular musical trends in America,thanks largely to the radio.