为什么这个不是perfect competition？

NO.PZ2023071902000037 问题如下 QuestionIf a firm encounters numerous competitors, a wnwarsloping mancurve for its procts, anzero economic profits in the long run, whicharacteristic is it least likely to possess? A.No pricing power B.Low barriers to entry C.fferentiatepro Solution In the context of monopolistic competition, firms encounter many competitors angenerally have limitepricing power e to the wnwarsloping mancurve. While they moffer fferentiateprocts through aertising annon-pristrategies, they still maintain some level of pricing power. However, the ease of entry into the market results in zero economic profits in the long runIncorrect. \"Low barriers to entry\" \"Profferentiation\" are characteristiof monopolistic competition. The Firm anMarket Structures• scricharacteristiof perfecompetition, monopolistic competition, oligopoly, anpure monopoly在垄断竞争的情况下，由于需求曲线向下倾斜，企业遇到许多竞争者，通常具有有限的定价权。虽然他们可能会通过广告和非价格策略提供差异化的产品，但他们仍然保持一定程度的定价权。然而，从长远来看，进入市场的方便性导致经济利润为零不正确的。“低进入门槛”和“产品差异化”是垄断竞争的特征。 “低进入门槛”和“产品差异化”则是垄断竞争的特征。 其他答案看到本题先给出几个特征 numerous competitors、 a wnwarsloping mancurve for its procts、zero economic profits in the long run。这是垄断竞争市场。如果是完全竞争，则需求曲线是horizon，而不是题目给出的wnwarsloping。完全竞争的需求曲线对个体来说才是horizon，对整个市场来说不也是wnwar？

NO.PZ2023071902000037问题如下 QuestionIf a firm encounters numerous competitors, a wnwarsloping mancurve for its procts, anzero economic profits in the long run, whicharacteristic is it least likely to possess? A.No pricing powerB.Low barriers to entryC.fferentiateproct Solution In the context of monopolistic competition, firms encounter many competitors angenerally have limitepricing power e to the wnwarsloping mancurve. While they moffer fferentiateprocts through aertising annon-pristrategies, they still maintain some level of pricing power. However, the ease of entry into the market results in zero economic profits in the long runIncorrect. \"Low barriers to entry\" \"Profferentiation\" are characteristiof monopolistic competition. The Firm anMarket Structures• scricharacteristiof perfecompetition, monopolistic competition, oligopoly, anpure monopoly在垄断竞争的情况下，由于需求曲线向下倾斜，企业遇到许多竞争者，通常具有有限的定价权。虽然他们可能会通过广告和非价格策略提供差异化的产品，但他们仍然保持一定程度的定价权。然而，从长远来看，进入市场的方便性导致经济利润为零不正确的。“低进入门槛”和“产品差异化”是垄断竞争的特征。 “低进入门槛”和“产品差异化”则是垄断竞争的特征。 完全竞争市场具有low barriers to entry的特点吗？它的需求曲线具体是什么样的呢

NO.PZ2023071902000037问题如下 QuestionIf a firm encounters numerous competitors, a wnwarsloping mancurve for its procts, anzero economic profits in the long run, whicharacteristic is it least likely to possess? A.No pricing powerB.Low barriers to entryC.fferentiateproct Solution In the context of monopolistic competition, firms encounter many competitors angenerally have limitepricing power e to the wnwarsloping mancurve. While they moffer fferentiateprocts through aertising annon-pristrategies, they still maintain some level of pricing power. However, the ease of entry into the market results in zero economic profits in the long runIncorrect. \"Low barriers to entry\" \"Profferentiation\" are characteristiof monopolistic competition.The Firm anMarket Structures• scricharacteristiof perfecompetition, monopolistic competition, oligopoly, anpure monopoly 题目也没说是monopolistic啊