Which of the Following Is an Example of a "Double

Which of the following is an example of a "double ghetto"?

A) Marilyn works at a factory all day,and spends most of her evening looking after her children and doing housework.
B) Marilyn lives in an impoverished neighbourhood situated next to a very wealthy neighbourhood.
C) Marilyn's boss refuses to let her take time off of work when her children are ill.
D) Marilyn needs to work two jobs outside of the house in order to provide for her children's needs.