Suppose that the Bureau of Labor Statistics reports that the entire adult population of Mankiwland can be categorized as follows: 25 million people employed, 3 million people unemployed, 1 million discouraged workers, and 1 million people who are either students, homemakers, retirees, or other people not seeking employment.What is the unemployment rate? a.3.3% b.12% c.10.7% d.6.7%