Suppose Good A belongs to a market where the firms earn zero economic profits in the​ long-run and entry of new firms will result in price changes that operate through shifts in the market supply curve for Good A. Which market structure does Good A belong​ to?
A.The oligopolistic market with homogenous products.
B.The oligopolistic market with differentiated products.
C.The perfectly competitive market.
D.The monopolistic competitive market.