From 1935 to 2010, the Proportion of Income Received by the Poorest

From 1935 to 2010, the proportion of income received by the poorest 20 percent of Americans has:

A) increased substantially due to the government's efforts
B) decreased sharply due to the impact of the Second World War.
C) slightly decreased due to the impact of the Great Depression.
D) increased from 12 percent to 14 percent.
E) remained virtually unchanged.