How Does Modern Gestalt Therapy Differ from Perls' Classical Approach

How does modern Gestalt therapy differ from Perls' classical approach?

A) Modern Gestalt therapists use cooperative dialogue and improvised, one-of-a-kind experiments.
B) Perls focused more on the "whole" person.
C) Modern Gestalt therapists have no use for figure-ground.
D) Perls' approach was much more disciplined.
E) Modern Gestalt therapists are more inclined to "shock" the client into action.