Men could directly turn back to Greece and Rome for instruction, for correction, and for inspiration in the following riel& of their work except

A．Roman and Greek works were better than the those of medieval Christian church
B．Roman and Greek works were different from Medieval works
C．the Roman and Greek music became known
D．a lot of Roman and Greek works were discovered

A．music did not exist before the Middle Ages
B．we were not better off than the Greek and Roman men
C．there .was not enough evidence to prove that Western music was originated from the ancient Greece and Rome
D．there were no authentic remains of the ancient Roman music