Refer to the graph shown.A movement from points B to C represents a(n):

Which of the following is not a valid criticism of Fogel's (1964) methodology in his study of railroads?

(a) The canal prices used for 1890 were low. (b) The impact of railroads on financial markets is ignored. (c) The nonpecuniary gains from using railroads could have been considered. (d) The amount of land cultivated would have been reduced.

Two isoquants, which represent different output levels but are derived from the same production function, cannot cross because

A) isoquants represent different utility levels B) this would violate a technical efficiency condition C) isoquants are downward sloping D) additional inputs will not be used by profit maximizing firms if those inputs decrease output E) Both B and D are true.