The prisoners' dilemma is an example of a(n) ________ game

Which of the following statements is TRUE?

A) If private saving is greater than private investment, then the private sector has a surplus. B) If private investment is greater than private saving, then the private sector has a deficit. C) If private investment is greater than private saving, then either the government or net export sector must have a surplus. D) All of the above answers are correct.

Margarine and butter can both be used as a spread on toast. This means that they are:

a. independent goods. b. complementary goods. c. substitute goods. d. Giffen goods. e. inferior goods.