Total cost divided by quantity of output is

If the United States, at the point where it is currently producing, must give up the production of 500 bicycles (B) to produce 20 additional tractors (T) with the same resources, the opportunity cost of producing 5 tractors is _______ bicycles.

A) 5 B) 20 C) 100 D) 125

The "Classical Dichotomy" refers to:

a. a distinction between "value in use" and "value in exchange." b. separate theories of demand and supply. c. the possibility of Giffen's Paradox. d. determination of relative prices independent of the nominal price level.