People buy prestige when they buy a premium product. They want to be associated with something special. Mass-marketing techniques and price-reduction strategies should not be used because__. Which of the following best completes the passage below? ['purchasers of premium products are concerned with the quality as well as with the price of the products', 'continued sales depend directly on the maintenance of an aura of exclusivity', 'affluent purchasers currently represent a shrinking portion of the population of all purchasers', 'manufacturing a premium brand is not necessarily more costly than manufacturing a standard brand of the same product']