Which of the following does not include an economic downturn?

To maximize profits, firms hire labor as long as

A) each additional hour hired produces more additional output than the real wage rate. B) the total hours hired produces more additional output than the real wage rate. C) each additional hour hired produces more additional output than the nominal wage rate. D) the quantity of labor supplied increases as the real wage rate increases. E) workers continue to supply labor to the firm.

What is private information and what problems does it create?

What will be an ideal response?