Which of the following can act as a barrier to entry for new firms in an oligopoly market?

A small open economy increases its desired saving. This causes the world real interest rate to ________ and the country's current account balance to ________

A) fall; fall B) remain unchanged; rise C) fall; rise D) remain unchanged; fall

Because it takes time for workers to search for a job and for firms to search for new employees, there will always be some workers who are

A) frictionally unemployed. B) structurally unemployed. C) cyclically unemployed. D) seasonally unemployed.