The value of a good or services can be measured with money. For example, a car with a price of $2,000 is worth twice as much as a car with a price of $1,000. This function is called the ____________or Unit of Account.
【简答题】A.The use of photographs in painting. B.The TV program about Norman Rockwell. C.The Saturday Evening Post magazine. D.Exhibits of art on magazine covers.