If an oligopoly is characterized by fierce competition, in long-run equilibrium the firms in the market will earn:（）

A. zero economic profits.

B. substantial economic losses.

C. substantial economic profits.

与其他金融机构相比，商业银行最明显的特征是( )。

A．吸收活期存款，创造信用货币

B．以盈利为目的

C．经营对象是货币资金

D．制定国家金融政策