In Structural Family Therapy, Which of the Following Is Not

In structural family therapy, which of the following is not a common problem, based on the theory developed by Salvator Minuchin?

A) Alliances across generations can result in parentification of a child.
B) Families can become either enmeshed and chaotic or disengaged and isolated.
C) Parents forget their role in the family (e.g., mother, father) and cross boundaries into another subsystem (e.g., aunt/uncle, or sister/brother) .
D) The therapist joins with the family to make a positive therapeutic alliance.