Changes in business inventories are not considered part of gross private domestic investment spending

Why can't two firms in a Prisoners' Dilemma enforce a better outcome that has higher payoffs?

A) Under an outcome with higher payoffs, the outcome is not a Nash equilibrium and each firm has an incentive to change their actions. B) Barriers to entry C) Barriers to exit D) The Nash equilibrium in a Prisoners' Dilemma has the highest possible payoffs for both firms.

Which of the following is false? a. The unemployment rate is the number of people officially unemployed divided by the civilian labor force. b. The labor force includes those people over the age of 14 who are either employed or unemployed

c. Discouraged workers, who have not actively sought work for four weeks are not counted as unemployed; instead they fall out of the labor force. d. Some people working overtime or extra jobs might be considered to be overemployed.