The Increase in the Number of Poor Families in the United

The increase in the number of poor families in the United States since 1965 can be attributed to a(n) :​

A) increase in the number of households headed by females.
B) decrease in the number of jobs in the U.S. economy in the last fifty years.
C) increase in the proportion of people above the age of 65 years in the population.
D) decrease in the unemployment rate in the U.S. economy.
E) slowdown in the rate of growth of the U.S. economy.