________: a market structure in which a large number of firms produce a differentiated product

An unexpected increase in aggregate demand causes

A. simultaneously the price level to rise and the unemployment rate to fall. B. simultaneously the price level to fall and the unemployment rate to fall. C. the price level to rise, but the duration of unemployment will remain constant, so the unemployment rate remains constant. D. the unemployment rate to fall, with no change in the price level.

Ann is waiting to be recalled after a layoff. Bill also has no job at the moment and is not searching for one. Who is officially "unemployed"?

A) Ann B) Bill C) Ann and Bill D) neither Ann nor Bill