Shirley Brice Heath's Research on the Socialization of Status and Race

Shirley Brice Heath's research on the socialization of status and race among Whites and Blacks in the rural-Piedmont Carolinas is important because

A) it shows how social class influences how we interact with other people.
B) it shows how historical and social conditions can affect our day-to-day interactions.
C) it shows that White people have an advantage over African-Americans in getting into good colleges.
D) both a and b