The Differences Between a Competitive Market and a Monopoly Include

The differences between a competitive market and a monopoly include all of these except

A) excess profits would be competed away in a competitive market, but persist in a monopolistic market.
B) a competitive market would work toward production of the quantity consumers seek, while a monopolistic market may restrict output to raise short term prices.
C) a competitive market's cost curves will shift with the market, while a monopoly's cost curves will remain stable.
D) a competitive market would work toward production of the quantity consumers seek, while a monopolistic market may restrict output to raise long term prices.