The Underclass in the United States Has Expanded Over the Last

Multiple Choice

The underclass in the United States has expanded over the last several decades as a fraction of the overall population partly because:

A) there are more people in the United States.
B) there has been a substantial movement of Black people into the middle class.
C) there has been a substantial amount of well-educated immigrants from Southeast Asia.
D) there has been a substantial amount of illegal immigration.