When We Look at Unemployment in the United States, Which

When we look at unemployment in the United States, which of the following statements is most accurate?

A) flows into and out of the unemployment pool tend to be fairly small relative to the actual number of unemployed
B) variations in the unemployment rates are fairly small across groups defined by age, gender, or race
C) the average duration of unemployment for the majority of unemployed tends to be more than half a year long
D) the average duration of unemployment was higher in the period of between 1975 and 1985 than it was between 1995 and 2005
E) the unemployment rates during the recessions of 1981/82 and 2001/02 were lower than the rate during the Great Recession of 2007-09