What is the opportunity cost of moving from point B to point A?

If the nominal interest rate is 6% and the inflation rate is 9%, then the real interest rate is

A) -3%. B) 3%. C) 6.67%. D) 15%.

Which of the following statements concerning the prisoner's dilemma is TRUE?

A) The player who moves last will always win. B) Confessing is the dominant strategy for both players. C) Neither player will pick the dominant strategy. D) The player who moves first will always win.