A retailer selling its own private-branded women's shoes has decided to simplify its pricing by setting a limited number of prices for its shoes. Although the cost of producing the shoes varies among each style, the store has priced each shoe at one of only three prices - $99, $149, and $199. The retailer has found that its loyal customers like this because it simplifies the shopping process. A customer who wants to splurge on a nicer pair of shoes may look at the shoes that cost $149 and $199, while customers on a stricter budget consider only the $99 shoes. Which type of pricing policy is the retailer using? a) Psychological pricing b) Skimming pricing c) Promotional pricing d) Product-line pricing e) Penetration pricing