Since the 1980s,broadcasting Licenses Are Automatically Renewed Unless

 Since the 1980s,broadcasting licenses are automatically renewed unless 

A)  the station has been found guilty of broadcasting obscenity. 
B)  some community group formally objects. 
C)  the station has been found to criticize the government unfairly. 
D)  the station's ownership has changed. 
E)  the station's ownership has not changed for a considerable period of time.