According to the author, music critics like Adorno err in doing which of the following Ⅰ. Overemphasizing the hegemony of the ruling classes over cultural expression Ⅱ. Being ignorant of pop forms other than American Ⅲ. Paying too much attention to mainstream pop at the expense of other genres

A． That of restaurant customers whose food has not arrived because the manager forgot to oversee its preparation.
B． That of a highway maintenance crew who cannot reach a pothole they must fix because the highway is congested with traffic from the pothole.
C． That of a man who saves his excess income in a bank account, only to find out the bank has charged fees so high that he has less money than when he began.
D． That of an unknown artist who dies just weeks before being recognized in an exhibition.
E． That of scientists trying to find a means of traveling at the speed of light, but find that their innovations can only asymptotically approach the speed, but never reach it.

A． the reduction of energy used in petrochemical plastic manufacture
B． the reduction of the production cost of petrochemical manufacture
C． the development of a biodegradable plastic
D． the creation of plastics with more useful qualities
E． the reduction of fossil fuel emissions in the environment