Which Statement Aptly Describes the Characteristics of the Middle Class

Which statement aptly describes the characteristics of the middle class in the United States?

A) They are people who are not regularly employed; depend primarily on the welfare system for sustenance; and have little schooling.
B) They are people who are middle-level white-collar; have education past high school; and with an income somewhat above national average.
C) They are people who are upper-level managers; professionals; owners of medium-sized businesses; and well-to-do,stay-at-home homemakers.
D) They are people who are middle-level blue-collar,lower-level white-collar; with income below national average; and are largely working in skilled or semi-skilled service jobs.