In the United States, Long-Term Poverty, Defined as a Family

In the United States, long-term poverty, defined as a family having an income below the poverty line for eight or more years, is

A) common, affecting approximately 25 percent of all American families.
B) common, affecting approximately 15 percent of all American families.
C) uncommon, affecting approximately 8 percent of all American families.
D) rare, affecting approximately 3 percent of all American families.