Which of the Following Is Not True About Income Quintiles

Which of the following is not true about income quintiles?

A) Only one in seven households in the bottom quintile has anybody working full time
B) Only one in three households in the top quintile has anybody working at all
C) A primary contributor to the smaller share of income going to the bottom quintile has been the growth of single-parent households
D) Three out of four households in the top quintile have two or more working
E) A primary contributor to the larger share of income going to the top quintile has been the growth of two-earner households