Bill and Joanne Have Been Married for Ten Years and Have

Bill and Joanne have been married for ten years and have two children. Recently, a number of family-related problems have occurred, causing Bill and Joanne a great deal of difficulty. Their coping mechanisms seem to be largely ineffective under the strain of these problems. The text labels Bill and Joanne's situation as an illustration of

A) family transition.
B) family hassles.
C) boundary ambiguity.
D) stressor overload.