If an increase in crime causes households to spend money on police and security systems, GDP will rise

Suppose that the total labor force is 100 individuals with 10 unemployed. The unemployment rate is ________. Now assume that 10 people drop out of the labor force and that 10 remain unemployed. The new unemployment rate is ________

A) 9 percent; 10 percent B) 10 percent; 9 percent C) 10 percent; 11 percent D) 11 percent; 10 percent

In a Bertrand model, if one firm has a dominant strategy, its best-response function

A) does not exist. B) is identical to its rival. C) is a constant. D) is to respond to its rival's price increase with a price decrease.