A new patient presents for evaluation of self-diagnosed bipolar disorder. An assessment of her history of interpersonal relationships increases your index of suspicion for borderline personality disorder as opposed to bipolar disorder. Which of the following circumstances is most characteristic of borderline personality disorder?

A. Her fluctuations in mood have caused problems with interpersonal relationships at work.

B. Both parents have expressed significant concern over the depths of her mood when she is depressed.

C. The history reveals that relationships with significant others always seem to be very tumultuous.

D. She is resistant to treatment because when her mood is good she is very productive.
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