One Potential Problem with Insight-Oriented Therapies, Such as Psychoanalysis and Client-Centered

One potential problem with insight-oriented therapies, such as psychoanalysis and client-centered therapy, is that:

A) gaining an understanding of the cause of maladaptive behaviors does not necessarily result in more adaptive and healthier behaviors.
B) patients must be in therapy for years before any changes occur.
C) most patients stop attending the therapy sessions before any progress has been made.
D) these therapies rely too heavily on learning principles to produce changes in emotional and behavioral functioning.