Which of the Following Best Characterizes the Underclass

Which of the following best characterizes the underclass?

A) Highly educated underachievers whose incomes are below most comparably educated workers; often referred to as "slackers."
B) People who are not regularly employed and who depend primarily on the welfare system for sustenance; they have little schooling and live below the poverty line.
C) Individuals who derive most of their income from the "underground economy" and who tend to "fly under the radar" of the Internal Revenue Service.
D) Middle-level blue-collar workers largely working in skilled or semi-skilled service jobs; their income is below the national average.
E) Low-paid service workers and operatives; they have some high school education a below-mainstream living standard.