Which period of time did the music and singers in mainland China suffer a sharp eclipse?

Which period of time did the music and singers in mainland China suffer a sharp eclipse?
A.In the late 1970s.
B.In the late 1980s.
C. In the late 1990s and early 2000s.
D. In the 2010s.
正确答案： In the late 1990s and early 2000s.