Intergenerational therapists focus on developing a therapeutic relationship that encourages all ...

Intergenerational therapists focus on developing a therapeutic relationship that encourages all parties to further their differentiation process. What does this mean?
 
  A) Intergenerational therapists believe that clients are in charge of the therapeutic process
  B) Intergenerational therapists believe that clients can only differentiate as much as their therapists have differentiated
  C) Intergenerational therapists believe that the differentiation of the client is the technique
  D) Intergenerational therapists believe that they must take sides with the most differentiated family member