If Greg uses a special glue to make model planes that he sells and the price of his model planes increases, then one would expect that the equilibrium price of the special glue would _______ and the equilibrium quantity would _________

Oligopoly: a. Does not meet the condition for allocative efficiency. b. Does not meet the condition for productive efficiency. c. May lead to greater technological progress

d. a. and b. are true, but not c.

When sellers have more information about the quality of a good than buyers do, a relatively large share of the goods in the market will be low-quality goods. This is the ________ problem.

A. free-rider B. law of diminishing returns C. adverse selection D. moral hazard