What are the common features of all games?

A cost function has economies of scale if

A) average fixed costs fall as production increases. B) total costs fall as production increases. C) the average total cost falls as production increases. D) it is less expensive to produce goods jointly rather than separately.

Specialization of labor

a. increases productivity without creating any problems b. reduces productivity, and is usually eliminated by business firms c. can create problems of boredom and repetitive motion injuries d. prevents the introduction of more sophisticated and efficient production techniques e. ignores individual preferences and natural abilities