Which function of money allows consumers who are searching for a new car to compare the costs of different optional features of different cars in order to determine if they want the features or not?

The figure above shows depicts the marginal revenue and costs of a perfectly competitive firm. The price the firm charges is

A) $4 per unit. B) $8 per unit. C) $16 per unit. D) None of the above answers is correct.

Economists are unanimous in their belief that advertising is socially inefficient

a. True b. False Indicate whether the statement is true or false