One of the first major policy initiatives launched in the 1940s by the newly formed Federal ...

One of the first major policy initiatives launched in the 1940s by the newly formed Federal Communications Commission (FCC) was the chain-broadcasting ruling. This policy was important because it_________.
 
  a. prohibited large networks from pressuring local affiliates to air radio programs produced by the network for nationwide syndication
  b. prohibited large networks from using their owned and operated stations to show local content
  c. introduced regulations on obscenity and profanity that would set the stage for later battles between networks and the FCC
  d. ended the US government's subsidization of the large radio networks