When Working with Minors, Why Is Maintaining an Individual Therapist

When working with minors, why is maintaining an individual therapist stance versus a family therapist stance nearly impossible?

A) Family members must give consent for the minor to receive treatment.
B) Family members often do not want to be included in the therapy process.
C) Family members do not have the right to access treatment records for the minor.
D) All of these are correct.