Which statement aptly describes the characteristics of the middle class in the United States? Group of answer choices They are people who are not regularly employed; depend primarily on the welfare system for sustenance; and have little schooling. They are people who are middle-level white-collar; have education past high school; and with an income somewhat above national average. They are people who are upper-level managers; professionals; owners of medium-sized businesses; and well-to-do, stay-at-home homemakers. 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.