During the Preindustrial Age,most Advertisements Took the Form of Signs

During the preindustrial age,most advertisements took the form of signs with symbols such as a beer tankard indicating a tavern because:

A) most people were illiterate and could not read.
B) most advertisers could not afford sophisticated advertisements.
C) there were laws prohibiting advertising in newspapers.
D) the churches would not approve other forms of advertising.
E) manufacturers, during that period, presumed that was the best form of advertisement.