The table above gives the demand schedule for lattes at the Bottomless Cu

Total net benefits are maximized when marginal net benefits are

a. Maximized b. Minimized c. Zero d. Equal to the discount rate e. Equal to price

Drawing conclusions from international comparisons of GDP are difficult to assess because

A) GDP is understated in poorer countries because much of the work that people do is not provided in markets. B) GDP cannot be adequately evaluated as a measure of people's welfare or well-being. C) without adjusting for purchasing power parity, GDP comparisons might very well be meaningless. D) all the above reasons hold true.