When Considering Using an Experiment with a Client, a Gestalt

When considering using an experiment with a client, a Gestalt therapist should:

A) Determine whether a client has Borderline Personality Disorder, because research has shown Gestalt therapy to be highly effective with those clients.
B) Examine the situation closely to determine how to best use interpretations within the technique.
C) Avoid using interpretations.
D) Avoid rapport-building activities, as they've been shown to adversely affect treatment outcomes.
E) Only a and b.