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In a given firm, skilled workers currently produce three times as much of its product as unskilled workers do per hour worked. Skilled workers earn $25 per hour, and unskilled workers earn $12 per hour. Based on this information, the firm should:

A. increase the use of skilled workers and decrease the use of unskilled workers.
B. decrease the use of skilled workers and increase the use of unskilled workers.
C. increase the salary of skilled workers to attract more of them.
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单项选择题The marginal revenue product is best defined as the:

A. addition to total revenue from selling one more unit of output.
B. additional output produced by using one more unit of a productive input.
C. gain in revenue from selling the output produced by using one more unit of a productive input.

单项选择题Consider an agreement between France and Germany that will restrict steel production so that maximum economic profit can be realized. The possible outcomes of the agreement are presented in the table below. Germany compliesGermany defaultsFrance compliesFrance gets 34 billion.France gets 14 billion.Germany gets 33 billion.Germany gets 45 billion.France defaultsFrance gets 43 billion.France gets 17 billion.Germany gets 6 billion.Germany gets 18 billion. Based on the game theory framework, the most likely strategy followed by the two countries with respect to whether they comply with or default on the agreement will be:

A. both countries will default.
B. both countries will comply.
C. one country will default and the other will comply.