Starting in 2008 and continuing into 2012, the Japanese yen kept appreciating against the U.S. dollar, hurting Japanese exports to the U.S

A decrease in the price of a fixed factor of production decreases total cost and

A) increases marginal cost. B) leaves marginal cost unchanged. C) decreases marginal cost. D) increases variable cost.

Firms in an oligopoly market will have a more difficult time maintaining price coordination when:

A) demand for the firms' products remains stable. B) the firms' cost structures are similar. C) the firms' products are highly differentiated. D) each firm controls the same share of the market.