Confucius considered himself a transmitter who consciously tried to reanimate the old in order to attain the new. He proposed retrieving the meaning of the past by breathing ______. into seemingly outmoded rituals. (vital)

A．the market for multimedia computers has become saturated
B．most mainframes have been transformed into personal computers
C．most personal computers have become much more powerful than mainframes
D．the low costs of microprocessors have been achieved thanks to the high-volume production