In "Moving Up with Kin and Community: Upward Social Mobility

In "Moving Up with Kin and Community: Upward Social Mobility for Black and White Women," which process do Elizabeth Higginbotham and Lynn Weber define as "moving from a working-class family of origin to a middle-class definition-from a position of working-class subordination to a position of control over the working class?"

A) vertical social class mobility
B) horizontal social class mobility
C) circular social class mobility
D) None of the above