What is one of the best ways to avoid credit problems? a) use your credit as often as possible b) don't read the fine print about the card you are applying for c) pay your credit bills on time each month d) apply for as many credit cards as you can

Firms like papa john’s, domino’s, and pizza hut sell pizza and other products that are differentiated in nature. while numerous pizza chains exist in most locations, the differentiated nature of these firms’ products permits them to charge prices above marginal cost. given these observations, is the pizza industry most likely a monopoly, perfectly competitive, monopolistically competitive, or an oligopoly industry?