When a Patient Diagnosed with a Personality Disorder Uses Manipulation

When a patient diagnosed with a personality disorder uses manipulation to get needs met, the staff applies limit-setting interventions. What is the correct rationale for this action?

A) It provides an outlet for feelings of anger and frustration.
B) It respects the patient's wishes, so assertiveness will develop.
C) External controls are necessary due to failure of internal control.
D) Anxiety is reduced when staff assumes responsibility for the patient's behaviour.