We can infer that entertainment in 1845 was based on

A．it doesn't have enough charlatanism.
B．it is controlled by corporate electronic media.
C．there is a lack of vigor in current entertainment.
D．people's tastes have changed for the worse.

A．have become increasingly popular among scholars since the 80's.
B．were so sophisticated that audiences couldn't understand.
C．actually involved very little actual fraud and double consciousness.
D．discouraged people from suspecting their perceptions.