All of the following are barriers to entry in an industry EXCEPT

The authors explain that a firm earning a zero economic profit in the long run has earned a competitive return on their investment. What do they mean by "competitive" return in this context?

A) The firm's return could only be earned under perfect competition and would be smaller under imperfect competition. B) The firm's return is at least as larger as the returns earned by other firms. C) The firm's return is at least as larger as could be earned in another investment. D) The firm's return is negative, which initiates stronger competition among firms in the market.

The current account balance tabulates the value of a country's exports of goods and services minus the value of its imports of goods and services

a. True b. False Indicate whether the statement is true or false