There Are Many Reasons Why Blacks Are More Likely to Live

There are many reasons why Blacks are more likely to live in extended families than are Whites. Which is NOT one of these reasons?

A) Black families maintain a high degree of geographical closeness.
B) Grandmothers play crucial roles in Black families.
C) Blacks are more likely to be poor, and only the poor live in extended families.
D) Household boundaries are often more fluid among Blacks.
E) Black families are more likely to have an established system of mutual aid.