Although isocost lines and budget lines are similar, they differ in that: A. the consumer is constrained to the budget line while the firm can have more than one isocost line. B. the slope of a budget line equals the price ratio while the slope of an isocost line is not related to prices. C. budget lines are linear while isocost lines can be curved. D. budget lines do not have a constant expenditure.

Label each of the following statements true, false, or uncertain. explain your choice carefully. a. workers benefit equally from the process of creative destruction. b. in the past two decades, the real wages of low-skill u.s. workers have declined relative to the real wages of high-skill workers. c. technological progress leads to a decrease in employment if, and only if, the increase in output is smaller than the increase in productivity. d. the apparent decrease in the natural rate of unemployment in the united states in the second-half of the 1990s can be explained by the fact that productivity growth was unexpectedly high during that period.