Question: Expensive television commercials that appear to provide no specific information about the product being advertised
a. are most likely used by firms that are perfect competitors.
b. should be banned by regulators because they add to the cost of the product without providing the consumer with any useful information about the product.
c. may be useful because they provide a signal to the consumer about the quality of the product.
d. only affect the buying habits of irrational consumers.