Unemployment Rates in the United States During the Past 40

Unemployment rates in the United States during the past 40 years

A) have remained between 4 and 6 percent.
B) have risen and fallen in a range between approximately 10 and 25 percent.
C) have risen and fallen in a range between approximately 4 and 10 percent.
D) have fallen steadily from approximately 10 percent 40 years ago to near 2 percent today.
E) have risen steadily and today are near all-time highs.